Questions raised by Yvonne Fletcher case | Letters

A memorial plaque for PC Yvonne Fletcher, who was shot outside the Libyan People’s Bureau (the country’s embassy) in St James’s Square on 17 April 1984.Your report (Suspect in Yvonne Fletcher murder freed after national security worries, 17 May) raises a serious unanswered question: what were the “reasons of national security” that meant “key material” was not made available to the police for use in court “in evidential form”?The answer could