The heavy armed raid which took place only two weeks ahead of the presidential elections in Iran, was countered by the Iranian border guards, Brigadier General Ahmad Ali Goudarzi said.
A number of terrorists were injured and were barred from entering the country from the Pakistani side of the border, according to the commander.
The assailants fled the scene and left a large cache of munitions and weapons, including a significant amount of explosives, C4, gunpowder fuse, electronic detonators, electronic circuit, M16 camera, 251 AK-41 rifles, several handguns, dozens of US-made grenades, and a wireless communication device.
No group has claimed responsibility for the assault, but the Pakistan-based US-supported Jaish al-Adl terrorist group has staged several raids in the province during the past months.
The separatist group seeks to cede Sistan and Baluchestan province from Iran.