No one claimed responsibility for the attack, the authorities at the scene said early today.

Two other groups also separately claimed responsibility for the attacks.

The letter claimed responsibility for the attack in the name of the Lebanese group.

No group immediately claimed responsibility for the attack on the mosque.

The military wing of Hamas claimed responsibility for the attack.

No group immediately claimed responsibility for the attack, and the bomber was not identified.

The perpetrators were not caught, and no organization claimed responsibility for the attacks.

The armed wing of Hamas claimed responsibility for the attack today.

The militant group Hamas apparently claimed responsibility for the attack.

The Taliban did not immediately claim responsibility for the attack, as it has with previous incidents.