Dramatic takeoff of a Fokker 100 due to ice buildup on wings

What happens in this video ?

The Fokker 100 operated by Bek Air took off from Almaty, Kazakhstan, with 98 people onboard. But ice had built up on the wings during the overnight stop: the airplane's performances were degraded. The Fokker 100 lifted off and reached a height of 6 meters before falling to the ground. The aircraft rebounded two more times before finally violently hitting the ground and crashing into a building. 98 people were on board. 12 people, including the captain, were killed.
See here more information about this Fokker 100 accident.