Abu Hafs al-Masri Brigades

The Abu Hafs al-Masri Brigades (), or Abu Hafs al-Masri Battalions, is a group which says they are a a branch of the Islamic fundamentalist organisation Al-Qaeda.
The group is named after a former policeman Mohammed Atef, also known Abu Hafs, from Egypt, who was a member of Ayman al-Zawahiri's al-Jihad al-Islami (Islamic Jihad).
The group has claimed that they were behind the 2004 Madrid train bombings and the 7 July 2005 London bombings, but if they were telling the truth was questioned as they had claimed that they were behind incidents that were caused by electrical problems.