On September 21, 1976, Orlando Letelier, a former Chilean diplomat and a leading opponent of dictator Augusto Pinochet, was killed by a remotely detonated car bomb in Washington, D.C. Letelier, who had been living in exile in the United States since 1974, was driving to his office at the Institute for Policy Studies when the bomb exploded beneath his car at Sheridan Circle on Embassy Row. He was killed instantly; his American colleague Ronni Karpen Moffitt, a 25-year-old fundraiser riding in the front passenger seat, died within the hour of injuries from flying shrapnel. Her husband, Michael Moffitt, who was seated in the back, survived with minor wounds..
The assassination of Orlando Letelier was carried out by agents of the DINA, Chile's secret police, in cooperation with anti-Castro Cuban exiles, as part of Operation Condor, a campaign of transnational repression by South American military governments against their political opponents. Declassified U.S. intelligence documents released in 2015 indicate that Pinochet personally ordered the killing in an effort to silence the most effective international voice of the Chilean resistance. The attack, carried out fifteen blocks from the White House, was for decades regarded as the most serious act of state-sponsored terrorism ever committed in Washington, D.C.
U.S. investigators identified DINA operative Michael Townley, an American expatriate living in Chile, as the bomb-maker, working with Chilean army captain Armando Fernández Larios and a cell of Cuban exiles recruited in the United States. Townley and several of the Cuban exiles were convicted in U.S. federal court, while DINA director Manuel Contreras and his deputy Pedro Espinoza were convicted in Chile in 1993 of ordering Letelier's murder. Pinochet himself was never charged. In June 2026, a Chilean court separately convicted Espinoza and two other former DINA officers, Pedro Octavio "José" Zara Holger and Raúl Iturriaga Neumann, specifically for the killing of Moffitt, closing the last open prosecution in the case fifty years after the bombing. The bombing prompted lasting controversy over how much U.S. intelligence agencies knew of the plot in advance, and over the Central Intelligence Agency's subsequent handling of the case.
Background Ambassador and minister In 1971, Letelier was appointed ambassador to the United States by Salvador Allende, the socialist president of Chile.. Letelier had lived in Washington during the 1960s while working for the Inter-American Development Bank and had supported Allende's presidential campaign; Allende believed that Letelier's experience and contacts in international banking would help develop U.S.–Chilean relations.. During 1973, Letelier served successively as Minister of Foreign Affairs, Interior Minister, and finally Defense Minister. After the Chilean coup of 1973 brought Pinochet to power, Letelier was among the first members of the Allende government to be arrested and was sent to a political prison in Tierra del Fuego.
He was held for twelve months in a succession of camps and subjected to severe torture, first at the Tacna Regiment and then at the Military Academy in Santiago, before being sent for eight months to the prison camp on Dawson Island. He was later transferred to the basement of the Air Force War Academy and finally to the Ritoque concentration camp. International diplomatic pressure—particularly from Diego Arria, then governor of the Federal District of Venezuela, and U.S. Secretary of State Henry Kissinger—secured Letelier's sudden release in 1974 on condition that he leave Chile immediately for Venezuela. The officer overseeing his release warned him that "the arm of DINA is long" and that Pinochet would not tolerate activity against his government from abroad, a clear signal that exile would not guarantee his safety..
Exile activism After settling in Washington in 1974, Letelier became a senior fellow at the Institute for Policy Studies, an independent think tank.. He spent the following two years writing, speaking, and lobbying the U.S. Congress and European governments against Pinochet's regime, quickly becoming the most visible international voice of the Chilean resistance and helping to block a number of prospective European loans to the military government. Colleagues described him as "the most respected and effective spokesman in the international campaign to condemn and isolate" Pinochet's government.. Letelier was assisted at the institute by Ronni Moffitt, a 25-year-old fundraiser who also ran a program supplying musical instruments to poor children and campaigned for democracy in Chile..
Letelier's growing prominence made him a target of Operation Condor, the intelligence-sharing and assassination program organized by right-wing South American governments to eliminate exiled opponents.. DINA had already killed one prominent exile, former army commander Carlos Prats, with a car bomb in Buenos Aires on September 30, 1974.. DINA director Manuel Contreras came to regard Letelier as a central obstacle to the regime's international standing..
In October 1975, Letelier became director of the international political economy program at the Transnational Institute, a progressive think tank affiliated with the Institute for Policy Studies. Through the institute's Amsterdam office, he successfully lobbied the Dutch government to cancel a planned $63 million line of credit to the Chilean mining industry.. On September 10, 1976, the Chilean government revoked Letelier's citizenship, with Pinochet's decree citing his interference "with normal financial support to Chile" and his efforts "to hinder or prevent the investment of Dutch capital in Chile". That evening, speaking at the Felt Forum in Madison Square Garden, Letelier declared:
Planning of the assassination In mid-1976, Contreras and Espinoza, DINA's director of operations, ordered Townley and Fernández Larios to travel to Paraguay to obtain Paraguayan passports and U.S. visas under false names. The scheme was nearly exposed when the U.S. ambassador to Paraguay, George W. Landau, grew suspicious of the visa applications, secretly photocopied the passports, and then revoked the visas. Contreras and Espinoza nonetheless proceeded with the plot, sending Fernández Larios to Washington under a Chilean alias, accompanied by a female DINA agent, to surveil Letelier's movements. Townley, using yet another falsified Chilean passport, entered the United States in August 1976, met Cuban National Movement leader Guillermo Novo in Union City, New Jersey, and traveled on to Washington, where he assembled a remote-controlled bomb from commercially available components.
According to journalist Jean-Guy Allard, the operation's Cuban participants were selected following consultations with leaders of the Coordination of United Revolutionary Organizations (CORU), including Luis Posada Carriles and Orlando Bosch; those chosen to carry out the bombing were Cuban-Americans José Dionisio Suárez, Virgilio Paz Romero, Alvin Ross Díaz, and brothers Guillermo and Ignacio Novo Sampol. On September 18, 1976, Townley, Paz, and Suárez attached the bomb to the underside of Letelier's Chevrolet Chevelle Malibu outside his home in Bethesda, Maryland. According to the Miami Herald, Posada Carriles attended the planning meeting that also helped set in motion the bombing of Cubana Flight 455 two weeks later.
Attack
On the morning of September 21, 1976, Letelier drove to work with Ronni Moffitt, seated in the front passenger seat, and her husband of four months, Michael, in the back seat; the Moffitts had taken Letelier's car that day because their own was in the shop. A car carrying two Cuban exiles tailed Letelier's vehicle from his home along River Road and into the city. As Letelier rounded Sheridan Circle on Embassy Row at about 9:30 am, the bomb detonated beneath the driver's seat, lifting the car off the ground and severing Letelier's legs; he died within minutes. The car came to a stop after colliding with a Volkswagen parked in front of the Irish Embassy. Michael Moffitt escaped through the rear window and, believing his wife was safe after seeing her stumble from the wreck, turned to try to help Letelier.
Shrapnel had severed Ronni Moffitt's larynx and carotid artery; she drowned in her own blood roughly half an hour after Letelier's death. Michael Moffitt suffered only minor injuries. Both victims were taken to George Washington University Medical Center, where they were pronounced dead. Investigators determined the bomb was a molded plastic explosive attached to the underside of the car and detonated by remote control rather than a timer, concentrating its blast into the driver's seat and blowing a hole roughly two feet in diameter in the floor.
Diego Arria, who had helped secure Letelier's release from prison two years earlier, again intervened to arrange for Letelier's body to be flown to Caracas, Venezuela, for burial, where it remained until the end of Pinochet's rule.
Investigation and prosecution
In the days after the bombing, the United States Department of State said it viewed Letelier's death with "gravest concern", and the Federal Bureau of Investigation (FBI) said it was the first act of violence against Chilean exiles it had recorded on U.S. soil. Investigators initially considered a range of motives, including the possibility that the killing was connected to the earlier assassination of Carlos Prats and the attempted assassination of Bernardo Leighton. A week after the bombing, the FBI's legal attaché in Buenos Aires cabled Washington, citing a source inside Argentine intelligence, that the killing was likely the work of a covert third phase of Operation Condor involving cross-border assassination teams.
The FBI eventually identified Townley as the organizer of the bombing. In April 1978, Chile agreed to extradite Townley to the United States after Generals Contreras and Odlanier Mena assured the ruling junta that Contreras had no connection to him—an assurance Contreras later admitted was false. Townley pleaded guilty to conspiracy to commit murder in exchange for a ten-year sentence and testimony against his co-conspirators, and was later released into the Witness Protection Program after serving roughly half his term. His wife, Mariana Callejas, agreed to testify in exchange for immunity from prosecution.
On January 9, 1979, the trial of the Novo Sampol brothers and Alvin Ross Díaz began in Washington. All three were convicted of murder, with Guillermo Novo and Díaz sentenced to life imprisonment and Ignacio Novo to eight years; the convictions were later overturned on appeal on an evidentiary issue and the three were acquitted at retrial. José Dionisio Suárez and Virgilio Paz Romero remained fugitives until they were captured in 1990 and 1991, respectively; each pleaded guilty to conspiracy to commit murder and received twelve-year sentences. In 1987, Fernández Larios fled Chile with FBI assistance, saying he feared Pinochet planned to kill him for refusing to help cover up the murders; he pleaded guilty that year to acting as an accessory to murder and received a reduced sentence in exchange for cooperating with investigators.
In Chile, a special judge appointed by the Supreme Court convicted Contreras and Espinoza on November 12, 1993, of ordering the assassination, sentencing them to seven and six years' imprisonment, respectively; the Chilean Supreme Court upheld the convictions on May 30, 1995. Contreras evaded imprisonment for several years before being incarcerated at Punta Peuco Prison in October 1995. He was later convicted in dozens of additional human-rights cases and, at the time of his death in a Santiago military hospital on August 7, 2015, was serving cumulative sentences exceeding 500 years; he had spent his final years denying responsibility for the Letelier bombing and blaming the CIA.