Authorities in Iowa, US, 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 Monday.

Axar.az reports, citing NBC, police were called Monday to a home in Muscatine, about 50 miles southeast of Cedar Rapids, where they found four people fatally shot, Muscatine Police Chief Anthony Kies said during a news conference.

“While talking to Ryan Willis McFarland, he took his own life,” he said.

Two other men who also are believed to be relatives of McFarland were later found fatally shot elsewhere in the city, according to Kies. One man was found in his home and the other was discovered dead inside a business, he said.