In 1989, Christer Pettersson was found guilty and jailed for life for the 1986 murder of Swedish Prime Minister Olof Palme.

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The case also reawakened memories of the killing of Swedish Prime Minister Olof Palme in 1986, a murder which was never solved.

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The very place names in Gothenburg breathe well-intentioned internationalism: Esperanto Square, Olof Palme Place, after its third-world-minded prime minister assassinated in 1986.

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The Stockholm conference was attended by only two heads of government, the host country's prime minister, Olof Palme, and Indira Gandhi from India.

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The laboratory off Audby Lane in Wetherby has dealt with evidence in cases as diverse as the assassination of the Swedish prime minister Olof Palme in 1986 and the disappearance of Peter Falconio in Australia in July 2001.

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The word gained an airing across the world 40 years ago, at the first UN environment summit in Stockholm, when Sweden's Prime Minister Olof Palme levelled the charge against the US over its use of defoliant chemicals during the war in Vietnam.

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The laboratory at Wetherby has dealt with cases as diverse as the bodies recovered from the Waco siege at the Branch Davidians compound in Texas in 1993, to the assassination of the Swedish prime minister Olof Palme in 1986 and the disappearance of Huddersfield man Peter Falconio in Australia in July 2001.

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