JERUSALEM (CNN) -- Six people were killed Sunday when Fatah security forces got into a gun battle with Hamas militants whom they were trying to arrest, an official said.
The gun fight took place in the city of Qalqilya in the West Bank when Fatah forces surrounded a house where Hamas militants were holed up.
In the ensuing battle, three Fatah security officials were killed. Two Hamas militants and the owner of the house were also killed, said the city's former mayor, Zahran Maaroof.
The homeowner's wife was hurt in the firing.
Hamas, a militant Palestinian Islamist movement, controls Gaza, but has limited influence in the West Bank, which is run by its secular rival Fatah. Palestinian leader Mahmoud Abbas is the head of Fatah.
CNN's Shira Medding contributed to this report.