British Prime Minister David Cameron has arrived in Tripoli, Libya, Downing Street confirmed this morning.

“The PM has arrived in Tripoli to discuss how the UK can continue to help build a strong, prosperous, democratic Libya,” the prime minister's office tweeted.

Cameron's visit comes a week after the UK advised British citizens to leave the Libyan city of Benghazi because of an "imminent" terror threat.  Earlier this week, British diplomats said the UK was was aware of reports of a possible threat to its embassy in Tripoli.

There have been mounting concerns about retaliatory attacks against Western interests in Libya following the French military intervention in Mali and the hostage-taking at a natural gas facility in Algeria earlier this month.

Cameron visited Algeria yesterday for talks with the government there, his office said.