By Mohamed al-Rayes 

CAIRO

An Egyptian police officer was killed and another top security official injured on Friday when their armored vehicle struck a roadside bomb in North Sinai, according to the state media. 

Akhbar al-Yom newspaper quoted an anonymous security source as saying that a police captain from a special forces unit had been killed by an improvised explosive device planted on the side of the road. 

Major-General Nasser Hussein, assistant director of security in Central Sinai, also reportedly sustained a serious head injury. 

The Egyptian authorities have yet to officially comment on the incident. 

The Sinai Peninsula has remained the epicenter of a militant insurgency since 2013 when the army ousted Mohamed Morsi -- Egypt's first freely elected president -- in a military coup.