Updated

A little known Egyptian group has claimed responsibility for the killing of a senior Egyptian army officer outside his suburban Cairo home.

The claim came in a statement by the "Banner of the Revolution" posted late Saturday on social media accounts known to be sympathetic to militant groups. The claim's authenticity could not be immediately verified.

Brig-Gen. Adel Ragai was the commander of the army 9th armored division headquartered in the sprawling military base of Dahshour west of Cairo. He had recently served in the northern part of the Sinai Peninsula, where security forces have been fighting Islamic militants for years.

The statement says Ragai's driver and security guard were injured in the Saturday attack.