Indiana ? More than two dozen cars and trucks piled up in a chain-reaction wreck Wednesday on a slippery section of Interstate 94 in northern Indiana, police said.

No serious injuries were reported, state police Sgt. Ann Wojas said.

Up to 3 inches of snow fell in the area during the night and snow was falling heavily at the time of the midmorning crash, which closed a six-mile stretch of I-94 for about seven hours.

Wojas said the crash involved 15 cars and 12 tractor-trailer rigs.