A gunman has killed two Coptic Christian brothers in an attack on a liquor store in Giza province on New Year’s eve.
The attack comes just days after nine people were killed in a church and store in Cairo.
They say it is unclear whether the attacker was an extremist.
Friday’s attack in Helwan suburb left eight Copts and a policeman dead. It was claimed by the Islamic State group.
Egypt’s Christian minority has been targeted by Islamic militants in a series of attacks since December 2016 that left more than 100 dead and scores wounded.