Five people are known to have been killed and at least 35 injured by tornadoes in Iowa, officials have said. The Iowa Department of Public Safety said the number of casualties is expected to rise after a tornado hit the small city of Greenfield on Tuesday. Four people died in Greenfield, a city of 2,000 inhabitants about 55 miles south-west of Des Moines, while a fifth person died when her car was swept away in the wind about 25 miles away.

Five people are known to have been killed and at least 35 injured by tornadoes in Iowa, officials have said.