Four persons were killed and eight suffered injuries on Wednesday after a suicide attacker rammed his vehicle packed with explosives into the convoy of an Afghan governor, security sources informed.

The governor of the south-eastern province of Khost was traveling towards the province’s capital when the incident occurred. Apparently, the attacker targeted the official’s vehicle but struck a car in which several men in charge with the governor’s security were sitting.

Afghanistan’s interior ministry said two civilians and two bodyguards died when the powerful deflagration occurred, three other servicemen and five civilians being also injured.

The same statement informed that the assailant was killed on the spot, while images aired by Afghan televisions showed US troops surrounding an area where a vehicle was still burning.

The International Security Assistance Force (ISAF) reported on Wednesday that one of its bases in the eastern region was attacked by insurgents. Two Afgan soldiers were killed and eleven ISAF servicemen were injured during the attack.

According to the ISAF, a group of Taliban fighters dressed as soldiers from the national army approached a military compound in the eastern province of Nuristan during the early hours and indiscriminately opened fire.

This attack revealed once more that extremists are “ignoring international law of armed conflict,” the ISAF also said. None of the wounded soldiers suffered life threatening injuries and were transported to a ISAF medical facility.

In another incident, seven Italian servicemen part of the same NATO-led security mission in Afghanistan were lightly injured when their chopper was forced to land near the country’s capital Kabul on Tuesday. The ISAF said a mechanical failure led to the emergency landing.