Egyptian Inspector of General Security, Lieutenant General Selim El-Gammal was shot Tuesday by unknown assailants in Al-Arish in the North Sinai.
El-Gammal was seriously injured and taken to Al-Arish Hospital.
Later on Tuesday, El-Gammal was transferred to a military hospital in Maadi, Cairo, to receive treatment for his injuries.
El-Gammal was attacked by unknown armed assailants who were driving a grey car; the men shot him and drove away, leaving him with a bullet in his jaw and another in his left arm.
On Saturday another three policemen were killed in Al-Arish by unknown assailants in an armed attack that left another three injured.
A security source suggested that the assault was in response to the killing of three men by police in Sinai last week.
The Sinai Peninsula, a largely desert area bordering Israel, has been the site of several attacks by unknown assailants, generally believed to be extremists.