Dutch experts say Malaysia Airlines flight MH17 broke up in mid-air after being hit by "objects" that "pierced the plane at high velocity" in July.

Investigators relied on cockpit data, air traffic control and images for the new report, as the crash site in eastern Ukraine remains too dangerous to access amid fighting between government troops and rebels.

On Tuesday, footage from the crash site showed rebels roaming amongst the wreckage, as Nomia Iqbal reports.