KANSAS CITY, Mo. (AP) - Crews are expected to work through the night at the scene of a gas explosion that sparked a massive blaze in an upscale shopping district in Kansas City, Mo.

Kansas City Fire Chief Paul Berardi said late Tuesday that the search for possible victims could take hours and that he expected his crews to be at the scene through the night.

While officials have said they have no reports of fatalities, Berardi noted, ``I would always fear there are fatalities in a scene like this.''

At least 14 people were injured and cadaver dogs are searching through the rubble to make sure no one is buried underneath.

The gas explosion occurred just after 6 p.m. and the resulting fire completely destroyed JJ's restaurant. Officials say more than a dozen people were injured, with at least two reported in critical condition.

The cause of the blast remains under investigation; however, a city official earlier said it was believed to have been caused accidentally by a utility contractor.