The two women, aged 18 and 22, members of Palestinian leader Yasir Arafat's Fatah movement, were detained in the Janin refugee camp in the north of the West Bank during an Israeli invasion on Thursday, Palestinian security sources said.

The others were arrested throughout the Palestinian territory, Israeli military sources said.

In addition, the army has issued a warning that Palestinian resistance fighters may be planning to take Jewish settlers captive and has told settlers not to hitch-hike in the West Bank, military radio said.

The warning was criticised by Ben Tzvi Lieberman, head of the Yesha settlers' council, who said that Israel should "radicate" (sic) the Palestinians.