Malnutrition rates among children in the Gaza Strip have doubled since Israel sharply restricted the entry of food in March, the U.N. said Tuesday. New Israeli strikes killed more than 90 Palestinians, including dozens of women and children, according to health officials, Associated Press reported.

Hunger has been rising among Gaza’s more than 2 million Palestinians since Israel broke a ceasefire in March to resume the war and banned all food and other supplies from entering Gaza, saying it aimed to pressure Hamas to release hostages. It slightly eased the blockade in late May, allowing in a trickle of aid.

UNRWA, the main U.N. agency caring for Palestinians in Gaza, said it had screened nearly 16,000 children under age 5 at its clinics in June and found 10.2% of them were acutely malnourished. By comparison, in March, 5.5% of the nearly 15,000 children it screened were malnourished, according to Associated Press.