21.   Only with help from a San Diego computer expert was the FBI finally able to track and outwit Mitnick by tracing cellular telephone calls.

22.   Several calls were traced to the apartment where he lived with another man.

23.   She tried to trace the calls herself, but gave up and called police.

24.   The call was subsequently traced.

25.   The call was traced and the paramedics arrived to save her mother.

26.   The call was traced to a South Boston telephone booth,according to sources familiar with the case.

27.   The authorities on Saturday raided the home of a policeman in Potsdam, near Berlin, after hate calls were traced to his number.

28.   The call was traced to a public telephone in South Boston.

29.   The lawyer said Mrs. Bissell kept her husband on the line that long to enable government agents to trace the call.