71.   Police said they have not firmly established a motive but suspect the slaying was related to gang activities.

72.   Police said they were interrogating witnesses, but had yet to establish a motive for the attack.

73.   Police investigators said the attacks apparently were aimed at the bus company but no motive has been established so far.

74.   Police now believe Gutierrez Cortina was murdered but have yet to establish a motive, investigator Eloy Lujano Lara said in a telephone interview.

75.   Police spokesman Kevin Loomes said no motive had been established.

76.   Police said the blasts were apparently caused by grenades but no motive has been established for the attacks, apparently aimed at the bus company.

77.   Prosecutors did not attempt to establish a motive.

78.   Speculations about financial and family problems as a motive were rife, but the police official said investigations have not established a motive.

79.   Soltys had no criminal record in the United States, and police said Thursday they have established no motive for the killing.

80.   The judge that convicted Raul Salinas admitted there was no direct evidence against him, and that prosecutors never established a motive.