OTTUMWA, Iowa (AP) -- Authorities in southeastern Iowa say one person is dead and others are injured after powerful storms swept through the state.

Keokuk County emergency management coordinator Larry Smith says one person died Sunday when strong winds caused an outbuilding to collapse in a rural area near Kinross. He says the victim's identity is being withheld pending notification of relatives.

Smith says one other person was critically injured when a barn blew over near Martinsburg.

Ottumwa Fire Chief Tony Miller says at least four people were injured when they were struck by flying debris at a home auction on the city's south side. He says the storm came abruptly and they weren't able to take cover.

Miller says the extent of their injuries isn't clear, but that some were hospitalized.