Soon after the tremors were felt, Pakistan army dispatched its medical teams and salvage parties through helicopters to quake hit areas near Iran border.
The 7.8-magnitude quake, the most powerful to hit Iran for more than 50 years, caused 35 deaths in Pakistan's Balochistan province.
The Mashkel district of Balochistan, Pakistan has been badly hit.
Tuesday's earthquake was about 180 times stronger in energy release than a 6.3-magnitude quake that struck on 10 April near the nuclear plant at Bushehr in south-western Iran. That quake killed at least 37 people and wounded 850.
Scientists say earthquakes in south-eastern Iran are triggered by the clash between the Arabia and Eurasia tectonic plates, the former of which is pushing north at a rate of several centimetres each year.