Four people were killed in a late-night shooting in Texas, including a suspected gunman and his wife, and one person was seriously injured, police said early Monday. Preliminary investigations showed a 30-year-old man shot three people — a 29-year-old woman, a 41-year-old-woman, and a 40-year-old man — at a house in Killeen, police said in a statement.

The Killeen Police Department said the suspect then forced his 28-year-old wife back to their home, several doors down on Godman Street, where officers found them dead from gunshot wounds. Police told NBC affiliate KCEN that the man had barricaded himself inside the house and died from a self-inflicted gunshot wound.

Police responded to reports of a disturbance just before 10:30 p.m Sunday (11:30 p.m. ET). They found three gunshot victims at an house on the street and were told the suspect had fled to his home with his wife. After hearing shots from inside the suspect’s home, the force’s Tactical Response Unit made several attempts to speak with the man but received no response. Just before 12:30 a.m. (1:30 a.m. ET) the tactical team entered the building and found the pair dead. A 41-year-old woman was found alive and in a serious condition at the first address and was transported to hospital.

— Shamar Walters and Alexander Smith