A pro-Russian fighter places a black box from the crashed Malaysia Airlines flight 17 on a table while handing it over to Malaysian officials Tuesday. Pic: AP.

LONDON (AP) — Britain’s prime minister says black boxes from the Malaysia Airlines plane downed in eastern Ukraine will be examined by U.K. air accident investigators.

David Cameron said on Twitter that British experts at the Air Accidents Investigation Branch will retrieve data from the flight recorders for analysis, following a request from the Dutch government.

Earlier Tuesday, pro-Russia separatists in Ukraine handed the two black boxes from Flight 17 over to Malaysian investigators in the city of Donetsk. Malaysian Prime Minister Najib Razak said the handover was part of an agreement he had reached with rebel leader Alexander Borodai.

Najib said the black boxes appeared “to be in good condition.”