Two Norwegian members of the International Security Assistance Force were wounded Tuesday in Kabul when unidentified gunmen opened fire on the patrol, ISAF spokesman Colonel Thomas Loebbering told AFP. "They were shot at. Two of them have been hit. The injured are now under medical treatment in the ISAF military hospital," Loeberring told AFP. The attack at around 12:45 pm (0815 GMT) came as the military-humanitarian force travelled across the Shomali plain, some 20 kilometers (12 miles) north of Kabul, Bjorn Johannessen, the charge d'affairs for the Norwegian embassy told AFP. One of the Norwegians was seriously wounded, the second less critically, Johannessen said. Some 4,700 soldiers from 28 different countries are currently deployed with ISAF, under the joint command of Germany and the Netherlands, to help maintain order in Kabul. ISAF, in place since December 2001, has been the target of several attacks in recent months, including a rocket and car-bomb attack. This was the first time, however, that ISAF forces have been directly fired on. On March 30, a rocket landed outside ISAF headquarters in Kabul, destroying a building and two cars but claiming no victims. On February 10, two rockets fell near the ISAF base on the same day that Germany and the Netherlands assumed joint control of the international force. On March 7, a car bomb exploded in the district of Bagrami in the south of Kabul as an ISAF patrol passed, resulting in the death of an Afghan interpreter and lightly injuring a Dutch soldier. **PHOTO CAPTION*** Soldiers from International Security Assistance Force (ISAF) guard a street in Kabul(AFP/File)