1.   An unidentified caller contacted the police and gave the names of the men involved in the robbery.

2.   Unidentified male caller employed hotline number morning of press reports.

3.   In addition to the unidentified caller, other apparent witnesses have been reported.

4.   San Francisco Registrar of Voters Germaine Wong said she had received a telephone inquiry from an unidentified caller asking the procedures for recalling a district attorney.

5.   The NCAA became involved last week when an unidentified caller notified the organization of possible rules infractions.

6.   The reports say the unidentified callers have hung up when asked which bank they are calling from or for other verification of their identity.

7.   Unidentified callers have long plagued telephone users, and faked documents are older than the postal system.

8.   A few minutes later, an unidentified caller warned the newspaper that a bomb would be used in the next attack, staff said.

9.   An unidentified caller warned Cardinal Miguel Obando y Bravo Tuesday that a car bomb would explode near his residence on the outskirts of the capital.

10.   An unidentified caller had said that a bomb was planted in the radio building, director general Alexander Velev said.