BEIRUT: Rebel-held parts of Syria’s Aleppo were hit with four air strikes on Sunday, being the first raids on the city since a truce took effect. The Syrian Observatory for Human Rights said several people were wounded but could not immediately give details about the casualties or identify who carried out the strikes. The fragile truce, which began on Monday evening, put a halt to the fighting around Aleppo and was for the delivery of some desperately needed aid. While the front lines had remained calm, civilians in the besieged eastern quarters had yet to receive promised food assistance. The estimated 250,000 people in the eastern half of the city have been living under government siege since early September. Rebel groups — which have yet to formally sign on to the truce — have regularly pledged to break the encirclement. The head of Fateh al-Sham Front, which changed its name from Al-Nusra Front after renouncing its ties to Al-Qaeda, said that opposition fighters would do all they could to end the truce. More than 300,000 people have been killed since Syria’s conflict erupted in March 2011 with protests calling for the removal of President Bashar al-Assad.