Sweden Says 34 Year Mystery Assassination of PM Olof Palme Is Closed

June 10, 2020 Updated: June 10, 2020

STOCKHOLM—A Swedish prosecutor closed the case of the 1986 assassination of Prime Minister Olof Palme on Wednesday, accusing an insurance company graphic designer who died 20 years ago of the country’s most notorious unsolved crime.

Palme, who led Sweden’s Social Democrats for decades and served two periods as prime minister, was one of the architects of Scandinavia’s model of a strong welfare state.

He was shot dead in central Stockholm in 1986 after a visit to the cinema with his wife and son. The failure of the police to find a killer has sparked decades of conspiracy theories, unlikely to be silenced by Wednesday’s accusation against a long dead suspect with no political profile.

Prosecutor Krister Petersson, who has led an investigation into the case since 2017, said the killer was Stig Engstrom, a suspect long known to Swedes as “Skandia man” after the company where he worked, with offices near the scene of the shooting.

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Krister Petersson, prosecutor in charge of the investigation into the murder of Sweden’s Prime Minister Olof Palme, poses at his office in Stockholm, Sweden on Feb. 19, 2020. (TT News Agency/Stina Stjernkvist via Reuters)

Engstrom, known to have been at the scene, was repeatedly questioned in early investigations but dismissed as a serious suspect at the time. He died in 2000 in what Swedish media reported as a suspected suicide.

A 2018 book by an investigative journalist brought to light a range of previously overlooked evidence, including timestamps showing Engstrom had left his office earlier than he had told police, in time to commit the crime.

“Because the person is dead, I cannot bring charges against him and have decided to close the investigation,” Petersson said.

He did not announce any major investigative breakthroughs, and said the technical evidence was not new. He felt confident the evidence would have been sufficient to arrest Engstrom, but “would not, in itself, lead to a conviction” without more evidence that it was no longer possible to obtain.

Palme’s son, Marten, told public service radio he also believed Engstrom was the killer, “but unfortunately there is no real conclusive evidence”.

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Roses are laid on a plaque marking the location where Swedish Prime Minister Olof Palme was shot and killed 25 years ago on a street in Stockholm on Feb. 28, 2011. (Bob Strong/Reuters)

Cold-War Critic

Palme was prime minister from 1969-1976 and again from 1982-1986. For decades, conspiracy theories around his killing have blamed a range of forces, from the CIA and Kurdish separatists to the South African security services.

Petersson said several witness accounts of the likely killer were in line with Engstrom’s appearance, while witnesses also contradicted Engstrom’s account of his movements at the scene.

Engstrom’s family have repeatedly dismissed accusations that he was the killer. Daily Expressen quoted his ex-wife as saying in an interview in February that he was too timid to have carried out the murder. A childhood friend, Olle Madebrink, told the paper Engstrom was “the most normal person in the world. I can’t believe anything else.”

Reuters was unable to immediately reach members of Engstrom’s family.

By Simon Johnson and Niklas Pollard