Israeli troops continue "precise operations" at Al-Shifa Hospital in Gaza "to thwart terrorism," according to the Israel Defense Forces (IDF) and the Israel Security Agency, known as Shin Bet (ISA).
"Thus far, the troops killed over 50 terrorists and apprehended approximately 180 suspects," according to a joint IDF and ISA statement. "The troops eliminated terrorists in close-quarters combat and located weapons in the area while avoiding harm to civilians, medical staff, and medical equipment," it added.
The Israeli army launched an operation on the hospital, where thousands of people are sheltering, on Monday.
A woman named Lamya, who is trapped inside the hospital, told CNN on the phone that people who look out the window or move between rooms get hit by Israeli fire and killed.
"There was a guy who looked from the second floor window and he was sniped," she said. "The situation is very dire." She was forced to hang up during the call as Israeli troops entered her building.
A fifth-year medical student, Ezz El-Din Lulu, who is also trapped inside Al-Shifa, called for an "urgent intervention before the hospital turns into a mass grave." The hospital is out of food, water and electricity, and Israeli troops "have literally cut us off from everything," he said.
"Anyone moving in the hospital grounds will be targeted by snipers," Lulu said in a video posted on his Instagram on Monday.
"We cannot go out to treat the injured or even move around. Some families went out and were targeted and martyred," he added.
In a statement released on Tuesday, Hamas condemned the Israeli operation on the hospital and "civilians' homes" in the surrounding areas in which "dozens" of people died.
CNN is unable to independently confirm the number of dead because of difficulties accessing the Gaza Strip.
This post has been updated with an eyewitness account from inside the hospital.