15 police officers and a 13-year-old boy caught in the crossfire, according to Gen. Saleh el-Masry, head of North Sinai security. Masry said that the attackers belonged to the radical Islamist group Takfir wal-Hijra, as well as Palestinian factions that snuck through the tunnels. "The Takfiris" -- extremist militants with a dogmatic, exclusionary ideology -- "have become more active during the revolution," he said, claiming that Egyptian security forces had arrested 12 of the assailants in the el-Arish attack, including three Palestinians. The spike in violence has been fueled by outlaws who escaped Egypt's prisons during the anarchy that accompanied Mubarak's fall. Deputy Interior Minister Gen. Ahmed Gamal El Din told me in an interview that 23,000 criminals escaped from Egypt's prisons during the revolution and that only 7,300 had been rearrested or turned themselves in as of May. The prison breaks also freed some men allegedly linked to al Qaeda, who appear to be attempting to establish a foothold in Sinai's ungoverned spaces. Maj. Yaser Atia of Egypt's General Security confirmed that Ramzi Mahmoud al-Mowafi, also known as "the chemist" for his expertise in preparing explosives, escaped a Cairo prison on Jan. 30. The fugitive's prison files presented to me indicate that the 59-year-old Egyptian had fled to Afghanistan and joined al Qaeda. Upon his return to Egypt he was given a life sentence by a military tribunal, though more details on the charges against him remain unclear. Egyptian intelligence sources told me that Mowafi is currently in Sinai, though they played down the threat he posed. And then there is the matter of the fliers. On July 29, the residents of el-Arish found a flier labeled "A statement from al Qaeda in the Sinai Peninsula" distributed throughout their neighborhoods. It describes Islam as the only true religion and criticizes the Camp David agreement that led to the Israeli-Egyptian peace treaty. Gen. Abdel-Wahab Mabrouk, the governor of Nort