Idaho State Police say a pickup truck that collided with a tour van near Yellowstone National Park last week, killing seven people, crossed the center line and hit the van.

The crash happened on Thursday just before 7:15 p.m. local time on a highway near Henry's Lake State Park in eastern Idaho, about 16 miles west of Yellowstone National Park.

According to the Idaho State Police, of the 14 occupants in a van that collided with a pickup truck, 12 were Chinese and one was of Italian nationality.