The firing incident occurred early morning when mortar shells landed in a border village of Panjgur district.
A security official said that at least eight mortars were fired across the border.
"Security forces were dispatched to the areas where the mortar fell. No loss occurred," he said on condition of anonymity.
Iranians occasionally fire across the border to foil bids by smugglers to cross the border or efforts by the anti-Shiite militants to sneak into Iran's volatile border regions, authorities say.
The two countries share 900 kilometre long border, which is often used by criminal mafia to transport the cheap Iranian petrol and diesel into Pakistan and human traffickers to take immigrants to Turkey and Greece through Iran.
