Jerusalem ? Israeli troops killed the suspected mastermind of a Tel Aviv suicide bombing on Tuesday, while U.S. diplomats said the United States was considering moving consular offices out of traditionally Arab east Jerusalem due to security concerns.

In another move to deter potential attackers, Israel’s interior minister threatened to revoke the citizenship of Israeli Arabs involved in bombings or shooting attacks on Israelis.

Early today, between 15 and 30 Israeli tanks and armored vehicles backed by helicopters pressed into the northern Gaza Strip, firing shells and machine guns at houses and searching for suspected militants, Palestinian security officials and residents said. A 28-year-old Palestinian died after being shot in the head, apparently by a stray bullet, as he slept on his roof, hospital officials said.

Tanks began pulling back from the area about 2 1/2 hours after they entered. A major incursion in the camp in March left at least 13 Palestinians dead.

The latest incursion came after Israeli helicopter gunships fired three missiles at a suspected weapons factory in Gaza City on Monday, slightly injuring four people.

Despite the hard-line policies, Israelis and Palestinians appeared to be trying to work out cease-fire proposals that could lead to Israeli troops leaving some Palestinian areas.

Israeli Defense Minister Binyamin Ben-Eliezer met the Palestinian interior minister, Abdel Razak Yehiyeh, late Monday, and more talks were planned. Yehiyeh and other top Palestinian officials were to leave the region Wednesday for talks in Washington.

The United States, meanwhile, was considering moving its consulate in east Jerusalem, which serves the Palestinian population in Jerusalem, the West Bank and Gaza Strip. A second U.S. consulate is located in the western part of the city.

The east Jerusalem consulate near the walled Old City does not meet security criteria since it is not set back from the road, said Jessica Davies, a spokeswoman for the U.S. consulate. Certain properties for a new site in the city have been considered but nothing has been finalized, Davies said.