According to local authorities in eastern Laghman province of Afghanistan, a relatively heavy explosion rocked Mehtarlam city in this province early Tuesday morning.

Provincial governor spokesman Sarhadi Zwak confirming the report said the incident took place in Basram village while a convoy of the coalition forces were crossing the area and were attacked by Rocket Propelled Grenade Launchers. The NATO troops convoy were moving from Noor Gram district to Mehtarlam city when the incident took place.

Coalition security forces did not suffer any casualties following the incident, provincial governor spokesman Sarhadi Zwak confirmed.

This comes as Mr. Zwak earlier said a NATO vehicle was damaged following the blast however there is no report regarding the casualties.

Sarhadi Zwak said the area has been cordoned off and NATO aircrafts are moving on the area.

In the meantime a spokesman for the Taliban group Zabiullah Mujahid said all NATO troops in the vehicle were killed following the blast.

NATO-led International Coalition Security Forces yet to comment regarding the report.