Suspect No. 1: This Group Says It Downed The Plane In Egypt

A terrorist organization linked to ISIS said it brought down the Russian airliner over Egypt's Sinai Peninsula. Who is this militant group?

Suspect No. 1: This Group Says It Downed The Plane In Egypt
Russian Emergency Situations Ministry

You've heard of ISIS.

But what about Sinai Province? That's the ISIS affiliate taking credit for downing of the Russia-bound airliner that crashed with over 200 people on board.

Here's what you might not know about the group, also known as Al-Wilayat Sinai.

Egypt's vast Sinai desert, demilitarized as part of a peace deal between Israel and Egypt in 1979, has long been a haven for militant groups.  

Including, Ansar Beit al-Maqdis, a group that emerged after the ousting of Egypt's then-President Hosni Mubarak and was later designated a terrorist organization by the U.S.

A year ago, the group pledged allegiance to ISIS leader Abu Bakr al-Baghdadi and renamed itself Sinai Province.

Unlike ISIS, Sinai Province's operations have been fairly limited in scope, focusing mainly on Egyptian security forces in the North Sinai.

Attacking a passenger jet with foreigners on board, if confirmed, would represent a major shift in tactics.

The Sinai Province, while insisting it was behind the crash, isn't saying how it carried it out. Investigators now say it's likely an explosion from a bomb brought down the plane.

This video includes images from Getty Images.