More Palestinian civilians died Monday as Israel continued strikes against rocket-firing Hamas militants in Gaza. Forty-two people were injured in an airstrike that hit two houses, a Gaza health official said, killing four people, including two children. At least 11 civilians died in a Sunday strike against a two-story home that came after Israel said it would pursue attacks against the residences of Hamas activists. Most of the 11 victims were women and children. Fifty civilians are thought to be among the 87 Palestinians killed over six days of fighting.