An Iranian Army helicopter crashed into a fruit market in Dorcheh, the central province of Isfahan, Iran on Tuesday, killing the pilot, co-pilot and two merchants, according to Iran’s state-affiliated Tasnim News Agency.

At least four people were killed when an Iranian military helicopter crashed into a crowded fruit and vegetable market in Dorcheh, in Isfahan Province, south of Tehran.

The aircraft was on a training flight when it came down amid smoke and debris, triggering a fire that emergency crews extinguished.