Gaza's civil defence agency and a hospital said eight people were killed in an Israeli airstrike on a gathering of civilians in the Al-Balata market area of Nuseirat refugee camp.
The area's Al-Awda hospital said it received eight dead and 22 people wounded in the strike.
Mahmoud Bassal, spokesman for the civil defence agency, told AFP the strike occurred during a funeral procession.
The civil defence agency and hospitals reported that five other people were killed in separate Israeli strikes on Friday.
They included two women and the man whose funeral was taking place when the market strike occurred.
