He served as New York City's special narcotics prosecutor from 1975 until 1991.

Ms. Brennan, 46, heads the city's office of the special narcotics prosecutor, which conducts long-term investigations on the drug trade.

Sterling Johnson, special narcotics prosecutor, said the shooting underscored the ruthless violence of gangs that sell crack.

Their cases will be handled by the office of Sterling Johnson, the city's special narcotics prosecutor.

"It's an excellent batting average," Sterling Johnson, the special narcotics prosecutor for the city, said of the raid.

Mr. Silbering, 54, used to be the city's special narcotics prosecutor.

The person paid was an undercover investigator for the city's special narcotics prosecutor.

She is an assistant Manhattan district attorney in the office of the special narcotics prosecutor.

Also involved in the investigation were the special narcotics prosecutor and the Drug Enforcement Administration.

Over the last decade, her case has been pursued by the city's special narcotics prosecutor and bounced between nearly two dozen judges.