DETROIT (AP) - Police say one adult and two children have been killed and about others 20 injured in a massive freeway crash in Detroit involving at least two dozen vehicles in icy, snowy conditions.

Michigan State Police Lt. Michael Shaw says the deaths and injuries happened in a chain-reaction crash Thursday morning on a mile-long stretch of Interstate 75 on the southwest side of the city. Shaw says the injured, including children, have been taken to hospitals.

Witnesses describe white-out conditions and slippery roads leading to the crash.

Shaw says many people had to be pulled out of vehicles.