An explosion ​heard in ​the eastern part ​of Tehran province was caused by the controlled disposal ‌of ⁠ammunition ⁠remaining from the ​war, Iranian state media, citing a ​local official, said on Saturday.The official ​said the operation ⁠posed no ‌threat to ​citizens ​and that ⁠no incident had occurred.Earlier on ​Saturday, Iranian state media ​reported that an explosion was heard in the eastern part of Tehran ‌province, with residents of Pakdasht and ​Qiyamdasht ​reporting ⁠the blast while its source and exact location were not ​immediately known.