Hamas security forces have fired over the heads of rival Fatah supporters, to disperse an opposition rally in Gaza.
Fatah supporters run for cover after Hamas fires shots into the air
Witnesses say the gunmen opened fire when demonstrators started hurling rocks at a former Fatah compound, now occupied by Hamas forces.
Reuters news agency reports it was the biggest Fatah rally since Hamas seized control of the Gaza Strip in June.
Four cameramen were arrested during the scuffles but were later released.
Journalists later staged a separate protest against the crackdown outside a building which houses many media outlets.
Since taking power in June, Hamas has tried to stop journalists filming pro-Fatah gatherings.