Some 3,000 fish died after thousands of gallons of Coors Beer accidentally spilled into a creek, brewery and state officials say.

John Schallenkamp, Adolph Coors Brewing Co. director of environmental control, said an operator apparently opened a valve over the weekend, diverting beer to a waste-water treatment plant that empties into the Clear Creek.An estimated 155,000 to 310,000 gallons of beer killed white suckers, bass fry and trout along a three-mile stretch of the creek, officials said.

The state Health Department and Division of Wildlife were investigating the spill. Coors could be fined up to $10 per dead fish, plus other penalties.