Hamas and Fatah activists clashed at the Palestinian parliament in the West Bank city of Ramallah this afternoon after the Hamas election victory.
A witness said the trouble started after Hamas members hoisted a green Hamas flag at the entrance to the building, and Fatah supporters tried to tear it down.
Shooting briefly erupted during the melee, witnesses said. At least two people were injured, but it was unclear whether they were wounded by gunfire. Police said there were no serious casualties.
Several windows were broken at the parliament building by stone throwers. Palestinian security forces rushed to the scene to try to disperse the rivals.