LONDON - British Prime Minister David Cameron arrived in the Libyan capital Tripoli on Thursday in an unannounced visit to the north African country, his office in London said.

Cameron is scheduled to meet his Libyan counterpart Ali Zeidan, and then expected to hold a joint news conference, which is expected to touch upon the threat of Islamist militancy across the region.

"The prime minister landed in Tripoli earlier on Thursday, and will discuss bilateral relations with Libyan officials," a spokeswoman for his Downing Street office said.

Cameron met Ashour Shuail, the Libyan interior minister, and visited a police training academy on Thursday morning.

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