Israel bombed targets in overcrowded Rafah early Friday, hours after Biden administration officials warned Israel against expanding its Gaza ground offensive to the southern city where more than half of the territory’s 2.3 million people have sought refuge.

Airstrikes overnight and into Friday hit two residential buildings in Rafah, killing eight Palestinians, and a third strike targeted a kindergarten-turned-shelter for the displaced in central Gaza, killing at least four people, according to hospital officials and AP journalists who saw bodies arriving at hospitals.