Iowa Governor Kim Reynolds has issued a disaster proclamation for four counties hit by tornadoes.

The move by Gov. Reynolds on Friday allows state resources to be used to help the cleanup after tornadoes swept through the state Thursday. The storms caused extensive damage in Lee, Marshall, Polk and Van Buren counties.

Officials say 17 people were injured.

Reynolds also issued an order Thursday that lets commercial drivers work longer hours if they are aiding in cleanup and recovery efforts.