Five patients in intensive care died after their oxygen ran out in southern Gaza’s main hospital that was stormed by Israeli troops, causing chaos for hundreds of staff and wounded people inside, health officials said Friday. Troops were searching the complex, where the military said it believes the remains of hostages abducted by Hamas might be located.

The raid came after troops had besieged Nasser Hospital in the southern city of Khan Younis for nearly a week, with staff, patients and others inside struggling under heavy fire and dwindling supplies, including food and water. The Israeli military said Friday it had detained dozens from the facility, including some it alleged were involved in Hamas’ Oct. 7 attack on Israel.