Sheikh Eissa Salem Ouda, a Sinai tribal leader and former parliament member was wounded by anonymous gunmen on Wednesday.
The attackers shot the 67-year old sheikh in the head while driving his car in the neighborhood of Masaeed in Arish, then fled the scene, said a security source.
According to a medical official at the Arish General Hospital, Sheikh Ouda is in a critical condition, currently undergoing surgery.
Sheikh Ouda is a leader of the Romailat tribe in Rafah and was a former member of parliament for several terms. He was also the president of Sinai Fighters Association.
Security sources are attempting to comb the area and arrest the attackers.
Edited translation from Al-Masry Al-Youm