The victims were the school principal, a secretary and a teacher, police said.
A school employee killed three people in a town in northwestern Bosnia and Herzegovina on Wednesday, police said. The gunman was seriously injured after attempting suicide.
The shooting took place around 10 a.m. local time in a secondary school building in Sanski Most, about 300 kilometers northwest of the capital Sarajevo, regional police spokesman Adnan Beganovic said.
The latter told the Associated Press that the man had used a “military weapon, an automatic rifle.” He later attempted suicide and is in serious condition in a hospital in nearby Banja Luka.
The victims were the school principal, a secretary and a teacher, police said.
Regional television station N1 reported that the man had had a dispute with the school management.