21.   Cook said Pfizer tries to determine whether the Web sites or other ads violate its trademarks and often notifies government authorities about anything that appears illegal.

22.   Daiwa told financial authorities about the ploy a year later, when it decided to further separate trading and auditing.

23.   Daiwa told financial authorities about the ploy a year later, when it decided to separate trading and auditing further.

24.   Earlier in the week, police raided a unit of Summit after a former employee tipped off the authorities about alleged bootlegging software at the Singapore maker of CD-ROMs.

25.   During various phone calls during the standoff, he railed to authorities about his immigration problems, fears of deportation, and current unemployment.

26.   EBay said it was in contact with Florida law enforcement authorities about the case.

27.   For the last three years, he has made overtures to U.S. authorities about a deal that would allow him to return to the United States.

28.   He also pleaded guilty to failing to tell the authorities about a kidnapping which had been carried out by another defendant, one of his clients.

29.   He displays a remarkable breadth and he writes with a kind of unassuming authority about matters that he has thought deeply about.

30.   He emphasized, though, that officials could alert law enforcement authorities about people suspected of engaging in a fraudulent marriage to evade immigration laws.