Also last month, Officer David London was indicted on charges of assault and filing false records after video from a surveillance camera at an Upper West Side building showed that he pulled a man he had accused of resisting arrest out of an elevator and beat him 18 to 20 times with a baton. Officer London has pleaded not guilty.

Detective Eager was released on a $15,000 personal recognizance bond, and her case was adjourned until May 12. Each of the three counts carries a maximum sentence of seven years in prison, prosecutors said.

Mr. Brill said Detective Eager had no incentive to lie. “What did she have invested in lying?” he said on Tuesday, recounting his remarks in court the day before. “She has made 1,300 arrests.”

The chief spokesman for the Police Department, Paul J. Browne, declined to comment on Detective Eager’s case other than to say that she had been suspended from the force. But when asked to comment about police officers accused of perjury, he said, “It does not happen often, but when it does, it is baffling why police officers would risk prosecution and their careers to advance a criminal case rather than let the chips fall where they may.”

The case against Detective Eager stems from her arrest of three people on drug charges in November 2007 at an apartment building on Holland Avenue in the Bronx.

In an excerpt from her grand jury testimony, released by Mr. Johnson’s office, Detective Eager says she and a partner left their van and entered the building through a broken door to follow two men who they believed had two boxes of marijuana. In another excerpt, she says she and her partner “went up to the fourth floor” and then “to the fifth floor” when they heard the suspects jingling keys to unlock Apartment 55N.

The third perjury count was based on her remarks that during the arrest she had recovered two boxes of marijuana, one 15 pounds and the other 18 pounds.