One person has died of a heart attack and at least 56 people were injured after a 4.2 magnitude earthquake struck 50km west of Tehran, Independent reports citing to state media.
According to Iran's Emergency Medical Services Most of the injured were trying to escape buildings and were released from hospital after treatment.
The earthquake, which struck at 12.54am local time, was an aftershock of a bigger 5.2 magnitude quake on 20 December, which left two people dead.