A Union Pacific train carrying crude oil derailed and burst into flames along Oregon's scenic Columbia River Gorge on Friday in the first major rail accident involving crude in a year.

While no injuries were reported, the train remained engulfed in flames six hours after the derailment, officials said. The accident has already renewed calls for stronger regulation to guard communities against crude-by-rail accidents.

Union Pacific Corp., owner of the line, said 11 cars of a 96-car train carrying crude oil derailed about 70 miles (110 km) east of Portland, near the tiny town of Mosier.