71.   Police said they are investigating the attack.

72.   Police said they were investigating the attacks and would release more details later.

73.   Police investigating the attacks in Londonderry arrested a youth.

74.   Police were investigating the attack, Van Vliet said.

75.   Police were investigating the attack but had no immediate comment.

76.   Police were investigating the attack, the report said.

77.   President Clinton called Mubarak from aboard Air Force One and offered U.S. assistance in investigating the attack.

78.   Russia said Thursday it was investigating an attack on a military helicopter from gunmen in Turkish territory.

79.   Scotland Yard investigators have assisted Greek police in investigating the attack, but there are no apparent leads.

80.   Some lawmakers want an independent commission to investigate the attacks.