CAIRO, Nov. 28 (Aswat Masriya) - An Islamic State affiliate in Egypt has claimed responsibility for an attack which killed four policemen in Cairo's twin city, Giza Saturday morning.

In a statement that went viral via social media, the group claimed to have killed "at least five" and injured several other security personnel. 

Aswat Masriya couldn't independently verify the authenticity of this statement. 

An Interior Ministry statement released hours after the attack said that two masked men on a motorcycle opened fire on a police car located in the district of Aboul Nomros, an industrial area on the outskirts of Cairo.

The group is mostly active in North Sinai where an insurgency has been escalating since the military ouster of President Mohamed Mursi in July 2013, after protests against his rule.

Bombings and shootings are not as frequent in Cairo, but the group has claimed a number of operations targeting vital facilities and security personnel. 

Last August, the group claimed to have conducted an attack on a Homeland Security   building in Shubra al-Kheima. The explosion is believed to have been caused by a car bomb, injuring at least six policemen.

The attack was preceded by another in July outside the Italian consulate in central Cairo which claimed the life of one Egyptian and injured 10 others. No Italians were injured in the attack. Islamic State fighters in Iraq and Syria claimed responsibility for the attack, Reuters reported at the time.