A 47-year-old German gunman shot and killed two people and injured another in a rampage Friday in the southern state of Bavaria before being overpowered by two gas station mechanics, authorities said.

Officials said the victims appeared to have been chosen randomly by the suspect, who spoke “incoherently” after his arrest.

Prosecutors said the suspect, a local man identified only as Bernd G. in line with German privacy rules, showed signs of psychological problems and was being assessed by a psychiatrist.