LAS VEGAS, June 18 (UPI) -- Nevada officials said a chunk of Interstate 15 was closed Wednesday morning in Las Vegas after numerous beer kegs exploded in the back of a truck.

Bob McKenzie of the Nevada Department of Transportation said the truck driver began hearing noises coming from the back of the vehicle, which was carrying 278 kegs of beer, while traveling south on the interstate, KVVU-TV, Las Vegas, reported Wednesday.

McKenzie said the driver reported seeing smoke and exited the truck shortly before the kegs began to explode.

Police said the carbon dioxide in the kegs caused them to explode.

The southbound on ramps at Flamingo Road and Spring Mountain Road were closed Wednesday morning for cleanup.