31.   Police have not determined a motive, but said they believe DeGuzman had planned to blow up the Cupertino college on Tuesday.

32.   Police said they had not determined a motive.

33.   Police said they had not determined any motive for the murder and Benard was not known to have any enemies.

34.   Police were unsure what type of explosive device was used and were still trying to determine the motive of the attack.

35.   Police had not determined a motive for the thefts, Goldenberg said.

36.   Police had not determined his motive.

37.   Police said they have not determined a motive for the shooting.

38.   Police said they were unable so far to determine a motive for the attack.

39.   Authorities have not determined a motive, said Baldomero Juvera, who is in charge of the state police homicide group in Tijuana.

40.   Authorities said they had not determined a motive for the attack.