Associated Press journalists saw several tanks move along unpaved tracks into Jenin, long a bastion of armed struggle against Israel.

Israel is deepening its crackdown on the Palestinian territory and has said it is determined to stamp out militancy amid a rise in attacks. It launched the offensive in the northern West Bank on Jan. 21 — two days after the current ceasefire in Gaza took hold — and expanded it to nearby areas.

Palestinians view the deadly raids as part of an effort to cement Israeli control over the territory, where 3 million Palestinians live under military rule.

Israeli Defense Minister Israel Katz said he and Israeli Prime Minister Benjamin Netanyahu ordered the military to “increase the intensity of the activity to thwart terrorism” in all refugee camps in the West Bank.

“We will not allow the return of residents, and we will not allow terrorism to return and grow,” he said.

Earlier, Katz said he had instructed the military to prepare for “an extended stay” in some of the West Bank’s urban refugee camps from which about 40,000 Palestinians have fled, leaving them “emptied of residents.”

The camps are home to descendants of Palestinians who fled during wars with Israel decades ago. It was not clear how long Palestinians would be prevented from returning. Katz said Israeli troops would stay “for the coming year.” Netanyahu said they would stay “as long as needed.”

Tanks were last deployed in the West Bank in 2002, when Israel fought a deadly Palestinian uprising.

The Palestinian foreign ministry called the Israeli moves “a dangerous escalation of the situation in the West Bank,” and urged the international community to intervene in what it termed Israel’s illegal “aggression.”

“Even if they stay, we will return to the camp at the end,” said Mohamed al-Sadi, one of those displaced from Jenin. “This camp is ours. We have no other place to go.”

Netanyahu under pressure to crack down

With fighting in Gaza and Lebanon on hold, Netanyahu has been under pressure from far-right governing partners to crack down on militancy in the West Bank. The U.N. says the current Israeli military operation is the longest since the Palestinian uprising of the early 2000s.

Under interim peace agreements from the early 1990s, Israel maintains control over large parts of the West Bank, while the Palestinian Authority administers other areas. Israel regularly sends troops into Palestinian zones but typically withdraws them after missions.

More than 800 Palestinians have been killed in the West Bank since the war in Gaza erupted on Oct. 7, 2023, with a Hamas attack on southern Israel. Israel says most were militants, but stone-throwing youths protesting Israeli raids as well as bystanders have also been killed. In the most recent operation, a pregnant Palestinian woman was killed.

Jewish settlers also have carried out rampages in Palestinian areas in the territory. And there has been a spike in Palestinian attacks emanating from the West Bank. On Thursday, blasts rocked three empty buses in Israel in what police view as a suspected militant attack.

Israel captured the West Bank, Gaza, and east Jerusalem in the 1967 Mideast war. Palestinians want all three territories for their future independent state.

U.S. envoy to pursue extended ceasefire

The truce between Israel and Hamas in Gaza remains tenuous.

A week is left in the ceasefire’s first phase, and no negotiations have been reported on the second phase. The truce’s collapse could lead to renewed fighting in Gaza, where Netanyahu says 63 hostages remain, about half of them believed dead, including a soldier captured in 2014.

“We are ready to return to intense fighting at any moment,” Netanyahu said Sunday. The military increased its “operational readiness” around Gaza.

The U.S. special envoy for the Middle East, Steve Witkoff, told CNN he expects the second phase to go forward, adding: “We have to get an extension of phase one and so I’ll be going into the region this week, probably Wednesday, to negotiate that.” He told CBS he will visit Qatar, Egypt, Israel, the United Arab Emirates, and Saudi Arabia.

But a senior Hamas leader, Mahmoud Mardawi, said Sunday the group will not engage in further discussions with Israel through mediators until Israel releases the 620 Palestinian prisoners meant to be freed on Saturday.

Israel said early Sunday it was delaying the release until it gets assurances that Hamas stops what Israel calls “humiliating” handovers of hostages in staged ceremonies criticized by the United States and Red Cross as cruel.

Egypt and Qatar were pressing Israel to release the prisoners, and Egypt refused to discuss any Israeli demands before then, said an Egyptian official involved in the talks who spoke on condition of anonymity because he wasn’t authorized to talk to the media.

Palestinian family members were distraught. “What have the prisoners done? We don’t know what happened. They killed our joy,” said one mother, Najah Zaqqot.

The White House is supporting Israel’s decision to delay releasing the Palestinian prisoners, calling it “appropriate.”

National Security Council spokesman Brian Hughes said Sunday that, “given Hamas’ barbaric treatment of the hostages, including the hideous parade of the Bibas children’s coffins through the streets of Gaza, Israel’s decision to delay the release of prisoners is an appropriate response.”

“The President is prepared to support Israel in whatever course of action it chooses regarding Hamas,” Hughes said in a statement.

Meanwhile, Netanyahu faced new criticism over the war while speaking at a military graduation. As he held up a picture of Shiri Bibas and her young boys, Ariel and Kfir, whose remains were returned from Gaza last week, to demonstrate “what we are fighting against,” audience members called out “Shame!” and “Why didn’t you save them?” The prime minister didn’t react.