Daniel Kawczynski MP, the chairman of the all-party group for Libya, has given his reaction to today's announcement that a Metropolitan Police team is to fly to Libya to investigate the 1984 murder of Wpc Yvonne Fletcher.
He told ITV News that even 28 years after the event, it is vital that Britain does everything it can to pursue the case.
More top news
The threat level has been raised to critical by MI5's Counter-Terrorism Analysis Centre.
Prime Minister Theresa May announced the decision from Downing Street.
A man, apparently armed with a small axe and a large stick, was detained close to the event and police cleared the area as a precaution.