Iowa shootings: gunman suspected of killing six relatives then himself

Police say four found dead in Muscatine home and two elsewhere in apparent domestic-related dispute' and suspect took own life while speaking to officers

Authorities in Iowa are investigating the fatal shootings of six people who they believe were killed by a relative who took his own life when confronted by police.

Police were called Monday to a home in Muscatine, about 50 miles (80km) south-east of Cedar Rapids, where they found four people fatally shot, Muscatine police chief Anthony Kies said during a news conference.