Deadly Florida highway pileup

Jan. 29, 2012: Debris and wreckage lie along the highway after a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP)

Jan. 29, 2012: Wrecked vehicles sit along the road at the scene of a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP)

Jan. 29, 2012: A fireman sprays the interior of a burned vehicle that was involved in a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP)

Jan. 29, 2012: A small passenger vehicle sits lodged beneath a semitrailer after a multi-vehicle accident that killed at least nine people, on Interstate 75 near Gainesville, Fla. Authorities were still trying to determine what caused the pileup on the highway, which had been closed for a time because of the mixture of fog and heavy smoke from a brush fire. At least five cars and six tractor-trailers were involved, and some burst into flame. (AP)

Jan. 29, 2012: Officials work at the scene of a multi-vehicle wreck on Interstate 75 at Paynes Prairie, south of Gainesville, Fla. (AP)