A recently emerged in July militant group called the Hasm movement (“determination”) claimed responsibility for the attack. Previously it has claimed responsibility for several more attacks, including assassination attempts against the country’s assistant prosecutor general and a senior cleric. Egyptian security officials say that the group is aligned with the now-banned Muslim Brotherhood. Egypt’s Interior Ministry said in a statement that the bombing took place near “two security points.” Friday’s bombing came days after Egyptian security forces killed three members of the Hasm movement in southern Egypt. The Giza prosecution is currently investigating the incident. Attacks against security forces have become common in recent years but are concentrated in North Sinai, where Egypt’s army and police are battling an entrenched Islamist insurgency.