All Colorado locations of Del Taco, a popular fast food restaurant that serves Mexican food, were abruptly closed Thursday, except for one. The company said in an emailed statement to USA TODAY on Friday that Del Taco franchise locations in Denver and Colorado Springs "are temporarily closed.

Del Taco abruptly closed all but one of its Colorado restaurants on Thursday with no explanation, according to signs posted on doors and a statement from the company.

American fast food restaurant chain Del Taco has abruptly closed almost all of its restaurants in the US state of Colorado without revealing details of its decision. The closures, undertaken by franchisee Newport Ventures,