Also news coming in tonight from US authorities on Hamas operating beneath hospitals in Gaza and what the US now believes Hamas is doing in those tunnels right now. Tonight, the White House revealing US intelligence confirms Israel's claims about Hamas using hospitals and the tunnels beneath them as their base of operations, including Al-Shifa Hospital, where those premature babies were taken off incubators when they lost electricity. Tonight, a senior administration official now saying hundreds of Hamas fighters with communications and traps are inside those tunnels. We have also just learned tonight that the Gaza Health Ministry, run by Hamas, has just now said that the Israeli military has told them they plan to storm Al-Shifah Hospital. Abc's Matt Kupman from Israel tonight with what we're just learning now.

Tonight, the Israeli military just confirming it is raiding Al-Shifah Hospital, Gaza's largest. Israel saying ground forces are conducting a, quote, precise and targeted operation against Hamas in a specified area of the hospital with medical teams and Arabic speakers. It comes less than 24 hours after our reporting from inside Gaza at the Children's Hospital, where the Israeli military says Hamas was operating inside and underneath. The Biden administration saying, Declassified US intelligence corroborates Israel's claims that Hamas and Palestinian Islamic Jihad have been using the hospitals to wage war against Israel and to hold hostages.

Hamas and PIJ members operate a command and control node from Al-Shifah Hospital in Gaza City. They have weapons stored there and are prepared to respond to an Israeli military operation against the facility.

A US official saying the assessment is based on a variety of sources, but did not provide additional details. And back inside Gaza, amidst that fierce street battle, we were taken to Rantiss Children's Hospital, where Israel claims Hamas had a command and control post inside the bombed-out basement. Those AK-47s look pretty old and rusty. I mean, was this a crack force that was here?

No, some of the gear was operationally geared, but also some of the terrorists fled away, did not stay here. It shows us the war machine Hamas is conducting from hospitals, a hospital for children.

Israel's chief military spokesman showing us another room where they believe Hamas kept some of the hostages. But the hospital's director tonight denying Israel's claims, saying the facility was used for displaced families, not hostages. David, the Israeli military saying that it had given Hamas a 12-hour ultimatum before the raid. That is a senior administration official telling us that the tunnels beneath Al-Shifah are extensive and multilayered. It's believed that there are hundreds of Hamas fighters there with communications equipment and booby traps. The tunnels we saw just outside that children's hospital appeared sophisticated. The Israeli military saying they were even powered with a solar array. David.

Matt Gupman in Tel Aviv for us tonight. Matt Gupman, thank you again tonight for your reporting from inside Gaza.

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