TEHRAN (BNO NEWS) — A gunman carrying an assault rifle went on a shooting spree in the Iranian capital on Sunday evening, local media reported on Monday. At least seven people were killed in the incident.

A middle-aged man, only identified as Mohammed, was arrested following the shooting. According to reports, he first shot dead his wife and two young children inside his home. It started at around 7 p.m. local time.

After the initial three shootings, the gunman climbed onto his roof and opened fire at his neighbors and passers-by. Four of his neighbors were also killed, five other people were reported injured.

Security forces shot the suspect before he was taken into custody. Local media said he used an AK-47 assault rifle and fired more than 800 rounds before running out of ammunition. The AK-47, or Kalashnikov, is capable of firing about 600 rounds per minute.

His motive was not immediately clear. Mass shootings such as this are extremely rare in Iran.