The Romanian heavy goods vehicle involved in the fatal pile-up on the Trakia highway did not cause the accident but became an obstacle on the road, Acting Director of Bulgaria's National Investigation Service Marian Marinov said, as the investigation into the crash that killed 12 people and injured 50 continues. The 62-year-old Romanian truck driver was released late last night after being questioned for a second time. Marinov said investigators had already questioned everyone who was at the scene and ordered forensic medical examinations of the deceased....