North Sinai, Egypt — An explosion went off Friday, followed by bouts of gunfire, in what is being reported at the deadliest terrorist attack on civilians in the Egypt. The death toll has surpassed 230, and over 100 people have been injured. The attack happened at a Sufi Mosque and according to Reuters, a bomb went off while 40 gunmen took positions and engaged the civilians fleeing the scene. They were also firing upon ambulances as they approached.

Attacks of this nature take an immense amount of planning, coordination and resources. Not only did they have to build, smuggle and detonate an explosive inside the mosque, they also had to gather, arm and organize 40 gunman to carry out the follow-up attack. This would take a well-established terrorist network of some kind, though a specific terror group has yet to claim responsibility.

The primary terror groups operating throughout Egypt are al-Qaeda in Sinai Peninsula (AQSP), Ansar al-Sharia and Ansar Bait al-Maqdis ISIL. Historically speaking, the Sinai Peninsula has long been plagued with violence as clashes between terrorist organizations and Egyptian security forces have continued to escalate.

Al-Qaeda has had a particularly strong foothold in the area and have a number of organizations operating under their purview. According to SOFREP’s “Jay,” these include: “Ansar al-Jihad in the Sinai Peninsula, Egyptian Islamic Jihad, Jamaat al-Murabiteen, Muhammad Jamal Network, Nasr City Cell, Jund al-Islam, and the military faction of al-Jama’a al-Islamiyya.” AQSP has approximately 6-7000 fighters in their ranks and are run by Ramzi Mowafi and Mohammed Eid Muslih Hamad.