The National Investigation Service is taking over the inquiry into two major pile-up crashes on the Trakia motorway that killed 12 people and injured more than 50, the prosecutor's office said.
At the request of the supervising prosecutor, the acting prosecutor general gave the case to the service by order. The prosecutor's office says the case is unusually complex in fact and in law, and needs investigators with top skills and experience in such cases.
Ten investigators and three forensic officers with a mobile forensic laboratory are already at the scene.
Officers from the Yambol regional police directorate opened the pre-trial proceedings under the supervision of the Yambol District Prosecutor's Office, which leads the inquiry into the causes of the crashes. They first inspected the scene and questioned witnesses.
Questioning continues, and investigators are inspecting the scene again with a drone. After that, they will order a vehicle technical expert report, which should show what caused the crashes.
Forensic medical examinations of the dead have already been ordered to establish the exact causes of death. The same examinations will be done on all the injured. Experts will also be asked to assess the amount of property damage.
The Appellate Prosecutor's Office in Burgas will give the investigators extra guidance on method.
Updated (10.11, 17:10): Videos added from bTV Media Group, Новините на NOVA.