Top UN officials have warned of an "apocalyptic" situation in Gaza as people are left with no safe place to go, while Israel's military expands its campaign in the territory.

The warning comes as satellite images show dozens of Israeli armored vehicles now operating in southern Gaza.

The images, obtained by CNN Tuesday, show the vehicles to the west of Salah El-Din Street, Gaza’s main north-south route, roughly six kilometers (3.7 miles) north of central Khan Younis.

Israel has called on Palestinians in some parts of southern Gaza to leave, issuing digital maps that residents have told CNN are either confusing or to which they don’t have access because of a lack of electricity and internet connectivity.

Earlier in the war, the the Israel Defense Forces (IDF) encouraged Gazans to move to the southern part of the Strip for their safety, while committing to strike at Hamas “wherever it is.”

Here are today's other headlines:

Gazans hunt for food: An apparent Israeli airstrike on Monday has destroyed the Al-Baraka bakery in the central Gazan city of Deir al-Balah, one of the few left in the Strip. Without it, people are digging through rubble — desperately searching for food.

Death toll in Gaza: At least 15,800 Palestinians have been killed in Israeli attacks in Gaza since October 7, according to a report published by the Palestinian Ministry of Health in Ramallah on Tuesday, which cites sources from the Hamas-controlled enclave. The report added that a total of 40,900 people have been injured, and the majority of wounded people are children, women, and the elderly.

Refugee camp surrounded: Israeli troops have "completed the encirclement" of the Jabalya refugee camp in northern Gaza, Israel's military said Tuesday, as it seeks to complete its offensive operations against Hamas militants in the north of the territory. The camp, Gaza's largest, has been hit by renewed Israeli strikes in recent days following the end of a week-long pause in the conflict on Friday.

More UN workers killed: The United Nations relief agency in Gaza, UNRWA, has confirmed the death of 19 more workers. Their deaths bring the total number of UNRWA staff killed in Gaza since October 7 to 130.

Bodies lie in hospital: There are 108 corpses lying – some unclaimed – at the Kamal Adwan hospital in northern Gaza, according to the territory's Hamas-controlled health ministry. Israeli troops have been advancing toward the facility, with heavy gunfire and explosions around its vicinity over the past 24 hours.

Man killed in refugee camp: A 25-year-old Palestinian man has been killed by Israeli military fire during renewed clashes at the Qalandia refugee camp in the occupied West Bank, the Palestinian Health Ministry said Tuesday.

Israeli troops killed: Three Israeli soldiers have died in combat in Gaza, bringing the total number of IDF deaths in the strip to 72 since the ground offensive began, it said Tuesday.

Hostages remain: The number of hostages believed to be in Gaza now stands at 138, the Israeli prime minister’s office said Tuesday, citing its office of the Coordinator for the Hostages and Missing. The number includes foreign nationals.