61.   An anonymous caller to an Athens newspaper said the bomb had been planted by a previously unknown group called Urban Guerrilla Anarchists.

62.   An anonymous caller to an Athens newspaper said the bomb had been planted by a previously unknown group calling itself Urban Guerrilla Anarchists.

63.   American broadcast networks reported a second responsibility claim made by another unknown group calling itself Hezbollah-Gulf.

64.   An unknown group sprayed his home in Huanta-Ayacucho, Peru, with machine gun bullets, IAPA said.

65.   American officials have acknowledged they have no leads on who was behind the truck bombing and doubt the claims of responsibility by previously unknown groups.

66.   An unknown group scattered leaflets outside the building warning of a rise of anti-crime vigilantes.

67.   Another newspaper in Calcutta received a phone call from an unknown group called Asif Reza Commando Force, which also claimed responsibility for the attack.

68.   And no one knows much about Al-Faran, the previously unknown group that claimed responsibility for the kidnappings and demanded freedom for jailed Muslim militants.

69.   Attention has focused on a previously unknown group accused of plotting to kill U.S. sailors and try to overthrow the government.

70.   But only Pius has gone public with an account of his experience, which included torture at the hands of an unknown group.