An Iranian military helicopter crashed into a fruit and vegetable market in central Iran on Tuesday, killing at least four people.Iranian state television reported that the crash occurred in Dorcheh, about 330 km south of Tehran, in Isfahan province, reported AP. The province houses a major Iranian air base and a nuclear site that was struck by the US during the Iran-Israel war in June.State TV said the army helicopter was on a training flight at the time of the crash. The pilot and co-pilot were killed, it added, broadcasting footage showing debris at the site and smoke rising from the market area. Iran’s semiofficial Fars News Agency reported that two people on the ground also died in the incident, taking the toll to at least four. The crash comes less than a week after an F-4 Phantom II fighter jet went down near the western city of Hamedan, killing one of its pilots.Iran has witnessed multiple fatal aviation accidents over the years. Western sanctions have restricted access to aircraft parts, leaving the country reliant on an ageing fleet of helicopters and airplanes for both military and civilian use, according to AP .