A grain bin full of wheat collapsed in Wray on Monday, spilling more than 2 million pounds of wheat onto town roads and dusting the nearby train tracks.

At 12:30 p.m., officers were called to the bin after employees reported that it was showing signs of collapsing, said Chief Adam Srsen.

Officers arrived and immediately closed the streets surrounding the elevator.

For about an hour after police arrived, the elevator continued to lean into the elevator next to it.

The bin was holding 44,000 bushels of wheat, weighing about 60 pounds each, said Mel Domine, managing director of CHS/M&M Cooperative, which owns the bin.

"It was popping and creaking, the old sounds of twisting, bending metal," said Officer David Bellman, who responded to the call. "Finally, it just gave way and the center just blew out of it."

Wheat spilled onto the road and onto the nearby train tracks. No one was injured.

"I was backing up, thinking maybe I should get back farther than I was," Bellman.

Crews were able to sweep the wheat off the tracks. The road remains closed as crews clean up the grain and dismantle the collapsed tower.

What caused the bin to collapse is still under investigation. Crews will examine pieces of metal that came off the collapsed bin, as well as an additional bin that was damaged during the collapse.

"Something caused that side wall to kink and cause that tipping," Domine said. "Once that weight moved from one side to the other, this was inevitable."