It is interesting that the group claimed responsibility on the attack called “Al-Jihad Al-Islami” [as reported on Al-Arabiya], which is the same name of the Egyptian extremists group.
The leader of the Egyptian group Sayyed Imam [Abu Al-Fadhil] arrested in Yemen in 2004 and recently he published a pact “Rationalization of Jihad” [you can find parts of the book in this site] asking Jihadis to abandon violence.
Is this a way to activate the Egyptian group??? Remember that “Al-Jihad Al-Islami” is not Al-Qaeda.