Fighters opposed to Syrian President Bashar al-Assad purportedly exchange automatic machine gun fire with Syrian troops near Homs.<br/> <br />This amateur video was uploaded to a social media site on Tuesday.<br/> <br />Another segment, also uploaded Tuesday, is said to show men taking turns to fire their guns out of a window at Syrian state forces also near the city of Homs.<br/> <br />More footage purports to show smoke rising from a building said to be a school in the area.<br/> <br />Reuters cannot independently verify the content of these videos.<br/> <br />Security forces killed at least 10 people in fighting across Syria on Tuesday, opposition activists say.<br/> <br />They say the rebels killed seven pro-government militia on Wednesday.<br/> <br />As the 14-month-old revolt continues, some warn that the situation could deteriorate into a civil war.<br/> <br />Despite an initial pause in fighting mid-April, a promised ceasefire has not taken hold.<br/> <br />Unarmed United Nations observers are being deployed in Syria to monitor the agreement that has been repeatedly violated by both state forces and rebels.<br/> <br />The United Nations says more than 9,000 people have been killed since the uprising began.<br/> <br />Sarah Sheffer, Reuters
