Egyptian security officials and medics say shells hit two houses in the restive northern Sinai Peninsula, killing at least four civilians, including a child.
The officials said the shelling took place on Saturday in the town of Sheikh Zuweid. They said 12 people were wounded and taken to a nearby hospital. The officials spoke on condition of anonymity because they were not authorized to brief the media.
Last week, nine people of the same family were killed and six wounded when a shell hit a truck carrying civilians in the town of Bir al-Abd.
Egypt is battling an Islamic State-led insurgency in the Sinai that intensified after the military overthrew an Islamist president in 2013. The militants have carried out scores of attacks, mainly targeting security forces and minority Christians.