(CNN)One person was killed after more than 100 cars piled up on Interstate 94 near Kalamazoo, Michigan, state police said Friday. About 20 more were injured, with 10 of those injuries "more serious" in nature, Michigan State Police Officer Shane Criger said. One of the tractor-trailers involved in the wreck was carrying fireworks that can be seen on video detonating.
100 cars pile up on Interstate 94 near Kalamazoo . Michigan police say 10 are injured seriously.