We begin tonight with the breaking developments for the first time, Israel, releasing video of what the military says is a Hamas tunnel shaft at Gaza's largest hospital, Al-Shifah Hospital. That's the hospital Israel stormed with patients inside. Israel says it also found a laptop that they say has images of some of the more than 200 hostages taken captive by Hamas, and tonight the body of one of those hostages found near the hospital. This is the video tonight, Israel says, shows the entrance to Hamas tunnel on the grounds of that hospital, Israeli troops inside the hospital again today, and Israeli soldiers showing this pickup truck inside the hospital complex. Inside they say ammunition, RPGs, AK-47s, and handcuffs. Those troops also revealing the body of that hostage, a mother of five, kidnapped in the Hamas terror attack on October seventh, found near the hospital. Her husband was killed on that day. And just moments ago here, I asked Secretary of State, Antony Blinkin, about this new evidence put out by the Israelis tonight. Is the US confident there was a command center under that hospital? And I asked about the efforts right now to get the hostages out.

Where do the negotiations stand? Abc's Matt Guttman, leading us off tonight from Tel Aviv.

Tonight, Israel, for the first time, releasing video they say shows a Hamas tunnel shaft at the besieged Ashifah Hospital, where Israel claims Hamas operates a command center underground and where thousands of people remain trapped with little food and water. For second day, Israeli forces searching the hospital complex, showing a bulldoze patch of hospital grounds in the midst of broken concrete and rebar, that hole, and then the camera panning up to reveal the hospital. In another video, the military showing that pickup.

We found a vehicle filled with ammunition, RPGs, AK-47s. We see handcuffs, knives, preparation for taking hostages from Israel.

He then lifts that tarp and shows the hospital beyond.

And this is where they choose to hide everything because they know the IDF won't attack. The Air Force won't attack here.

Hamas denying Israel's claims, but tonight, Israeli forces saying they also found laptops at Al-Shifah containing photos and videos of some of the hostages. At Tonight News, they discovered the body of one of the hostages, 65-year-old Dehudit Weiss, inside a house adjacent to that hospital, but no word on how or when she died. Tonight, Prime Minister Netanyahu claiming Israel has strong indications hostages were held at Al-Shifah Hospital, something the Israeli military showed us during our trip to the Rentise Children's Hospital nearby.

What makes you think that this was a spot where somebody was held hostage?

We're going to bring here a forensic tip.

The director of NTC Hospital denies the allegations, and tonight ABC News has learned a deal for about 50 hostages, all women and children, is less likely tonight than it was 24 hours ago. The WHO saying more than half of all of all of the hospital's hospitals are not functioning. Our team inside one Southern Gaza hospital today overflowing with the wounded. So many treated on the ground. Israel today dropping leaflets in Southern Gaza, warning people to flee to certain areas, signaling its ground offensive might expand southward. To understand the Palestinians who are in the south where it's been bombed no longer feel safe listening to the Israeli military because even in the south, the place that's supposed to be safer.

Is apparently not. So it is safer, and it is also the area we're bringing, allowing, and pushing more and more humanitarian aid to come.

Amidst those shattered neighborhoods, displaced Palestinians fleeing south, taking only what they can carry, showing their IDs to.

Israeli troops. Let's begin. Matt Gumbin with us live from Israel again tonight. Matt, 41 days now. Where do these negotiations stand tonight to try to free the hostages?

David, according to Israeli and American sources, we are told that the deal is now looking less likely in the next couple of days than it was just yesterday. The main sticking point continues to be the number of hostages. Israel, once 80 released, all of the women and the children and their family members, Hamas were told, is pressing for fewer than 50.

David. Matt Gupman, leading us off tonight from Tel Aviv. Matt, thank you.

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