Awqaf Minister Mohamed Mokhtar Gomaa on Saturday said that killing three judges in Sinai was a crime against justice and humanity.
In a statement, Gomaa described the culprits as barbarians who believe in no religion and have no morals.
He called on all the concerned bodies to unify against terrorism.
The minister expressed condolences to the families of the slain judges.
Earlier in the day, armed men attacked a car in North Sinai's city of Arish, claiming the lives of four people, including three judges, and injuring a fourth judge.