Seven people were shot and killed overnight in south-central Missouri, the Missouri State Highway Patrol said on Friday. The unidentified gunman, known to be 36 years old, then killed himself, according to the Associated Press. The identities of the victims have not been released, but police said they were found at four different homes.

The shootings took place in Texas County, Missouri, some 40 miles from the Arkansas border. The shooter was found dead from an apparent self-inflicted gunshot wound in a neighboring county, according to CNN. Police were alerted to the shootings when a woman called 911 in Tyrone, Missouri, after she said she heard gunshots in the house. It is unclear if the five other victims, including one who was injured and taken to a hospital, were shot before or after the incident prompting the 911 call. Another elderly woman was found dead of apparent natural causes at one of the residences, police said.

The Missouri State Highway Patrol is scheduled to hold a news conference around 10 a.m. EST on Friday. Read its up-to-date statement here: