71.   Their motive was not known.

72.   The young man then confessed, it reported, adding that police still do not know the motive.

73.   U.N. police were investigating the case, but did not yet know the motive for the assault.

74.   Detectives said Sunday they did not know the motive for the shooting, but indicated that they had not ruled out a drug link.

75.   The police said they did not know his motives.

76.   They added that it was too early to know the motive behind the killing.

77.   No motive was immediately known.

78.   No arrests have been made and the motive was not known.

79.   No motive is known for the hijacking.

80.   Police said they did not yet know the motive for the attack and stabbing.