Israeli forces raided a refugee camp in the West Bank city of Jenin on Tuesday, killing at least six Palestinian gunmen, including a Hamas gunman suspected of fatally shooting two brothers from a Jewish settlement near the village of Huwara.

Witnesses said fighting broke out after residents of the camp saw Israeli soldiers getting out of a furniture truck near a house on a hill overlooking the centre of the sprawling camp and fighters immediately opened fire.

In the ensuing gun battle, Israeli forces surrounded a house where the suspected gunman had barricaded himself with other fighters, and used shoulder-fired missiles against the building, a statement from the military said.

The Palestinian health ministry said six Palestinians were killed and at least 16 wounded. One member of the Israeli police force was wounded and three lightly hurt.

The military identified one of the gunmen as Abdel-Fattah Kharusha, a member of the Islamist group Hamas, who it said shot two Israelis while they sat in their car at a checkpoint near the Palestinian village of Huwara in the occupied West Bank on Feb. 26. It said his two sons had been arrested in a raid at the same time on the city of Nablus, another centre of militant activity.

According to statements by Hamas and Islamic Jihad, all those killed were gunmen from the militant groups Hamas, Islamic Jihad and Fatah.

"We call upon the fighters of our people everywhere to escalate armed resistance against the occupation and to fight them everywhere on the land of our occupied home," Hamas' armed wing said in a statement.

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