A Chicago man with “anger management issues” killed four of his neighbors as they ate dinner and critically wounded another in a shooting Saturday at an apartment complex on the city’s Northwest Side, police said.

The suspect, whose identity has yet to be released, was known to the victims, Chicago police said. The man was taken into custody and a weapon was recovered at the scene.

The shooting happened around 5:30 p.m. when the suspect, a 67-year-old retired construction worker, went into his second-floor neighbor’s apartment and killed a family of three men and a woman who were sitting at a table eating dinner, First Deputy Superintendent Anthony Riccio told the Chicago Sun-Times.