Iranian border guards fired dozens of rockets into Kech district of Pakistan's Balochistan province, officials said Monday.

Iranian border guards Monday night fired 42 rockets into Kech's Zamuran area, located close to the border, Dawn online reported citing sources in Balochistan Levies paramilitary force.

The rockets landed at a village in Zamuran and injured seven Pakistani civilians, Levies sources said.

The sources added that some armed men had attacked a checkpost in Koh-e-Sor inside Iranian territory and killed three Iranian officials Sunday evening.

Panic prevailed among people as Iranian border guards continued to fire rockets inside Pakistani territory the entire night.

Levies and Frontier Corps (FC) personnel rushed to the area to defend the border.

When FC and Levies personnel reached the border, the Iranian guards stopped firing.

Iran has alleged that the assailants who attacked the Iranian checkpost sneaked back into Pakistan. The allegation has been vehemently denied by Pakistani officials.

Security on both sides of the border was tightened in the aftermath of the incidents.

Pakistan shares a 900 km-long porous border with Iran and the two countries had recently decided to boost intelligence coordination to wipe out terrorists from the area.