Palestinian officials and witnesses say Hamas militiamen detained at least 10 members of the rival Fatah movement after breaking up a wedding and beating guests.
The witnesses said the arrests occurred during overnight marriage celebrations in the northern Gaza town of Beit Hanun.
Hamas authorities say the wedding guests were singing Fatah nationalist songs in support of Palestinian President and Fatah leader Mahmoud Abbas, and firing guns into the air.
Hospital workers said at least 10 people were hurt in the confrontation.
Witnesses said that after the incident, about 150 relatives of those arrested staged protests outside Hamas offices in the town. Most of the protesters were women and children.
Hamas militants took control of the Gaza Strip nearly two months ago after a week of deadly street battles with Fatah.
Some information for this report was provided by AFP and AP.
