Roofs torn off and trees knocked down in Union City as more than 7m Americans at risk of severe weather

Three people died and a dozen people have been injured in a storm in southern Michigan, according to the sheriff's office.

Roofs torn off and trees knocked down in Union City as more than 7m Americans at risk of severe weather

Four people were killed in Michigan and two died in Oklahoma, officials say, as severe storms swept across parts of the US.