Dutch experts have returned to Ukraine to probe the crash site of a passenger jet, including visiting a location previously considered unsafe because of fighting with pro-Russian separatists.
The Dutch Justice Ministry said on March 20 that a 12-person team consisting of defense and police officers would remain in the area until March 28.
The Malaysia Airlines flight MH17 was shot down on July 17, killing all 298 people on board, most of them Dutch.
On March 19, Russian Foreign Minister Sergei Lavrov called for "unbiased and transparent" investigation into the downing of the plane.
The call came after Dutch broadcaster RTL reported that a metal fragment from the crash site matches a Russian-made surface-to-air BUK rocket.
Russia has suggested that the airliner was downed by the Ukrainian military.