1.   The bombing is being blamed on a previously unknown group of terrorists.

2.   He was released by a previously unknown group, the Islamic Dawn Organization, but was believed to have been held by Al Jihad al-Islami.

3.   Two groups implicated were said to be the National Democratic Alliance and a hitherto unknown group, Ana al-Sudan.

4.   Among the puzzling factors has been the emergence of Al-Faran, a previously unknown group.

5.   Authorities in the Mideast and US said they did not know who was behind the attack, although a previously unknown group claimed responsibility for the bombing.

6.   A previously unknown group, identifying itself as the Islamic Deterrence Forces, claimed responsibility for the attack on the ship.

7.   A previously unknown militant group that called itself Al Faran took responsibility for the kidnappings.

8.   After the shooting, Israeli reporters received beeper messages signed Ain, a Hebrew acronym for the Israeli Avenging Organization, a previously unknown group.

9.   C-N-N reports a caller claiming to be a member of a previously unknown group has claimed responsibility for the bombing.

10.   Eight days after the first bombings, a previously unknown Afrikaner group calling itself the Boer Attack Force took responsibility for them.