Pic: AP.

BEIJING (AP) — About two dozen relatives of Chinese passengers on the missing Malaysia Airlines flight have demanded more information at a Beijing office building that houses the airline’s regional office.

Under the tight watch Wednesday of at least a dozen Chinese police and several building employees, the relatives were kept from entering the office building.

Malaysia Airlines Flight 370 is thought to have crashed in the southern Indian Ocean on March 8 with 239 passengers and crew on board, but a seabed search has found no trace of the plane.

Relatives say they have been demanding the flight data of the plane, which disappeared en route to Beijing. They also want to see an analysis of its possible tracks and videos of the passengers boarding the plane.

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