Libya has agreed to cooperate in the investigation into the 1984 killing of a London policewoman outside the Libyan embassy in London, officials said Thursday. Detectives from the Metropolitan Police will travel to Libya to interview witnesses, The Daily Telegraph reported. Interim Prime Minister Abdurrahim El-Keib promised during a meeting in London with Prime Minister David Cameron his government will assist British investigators. Yvonne Fletcher, 25, who was on duty, was killed by someone firing from inside the Libyan embassy during a protest against the regime of Moammar Gadhafi. Everyone in the embassy was eventually allowed to leave Britain, and the two countries severed diplomatic relations. Investigators were eventually able to travel to Libya, most recently in 2010. But they hope the fall of Gadhafi will loosen the tongues of potential witnesses, the reports said. \"The Fletcher case is a case that is close to my heart personally,\" El-Keib told Cameron. \"I had friends who were demonstrating that day next to the embassy. It is a sad story. It is very unfortunate that it has anything to do with the Libyan people.\"