Jabbar Collins, the jailhouse lawyer whose dogged investigation persuaded a federal judge to free him after he had served 15 years in prison for murder, sued New York City, Brooklyn prosecutors and city detectives for $150 million in damages yesterday.

Mr. Collins charged that prosecutors within the office of Brooklyn District Attorney Charles J. Hynes “had wrongfully withheld a key witness’ recantation, had knowingly coerced and relied on false testimony and argument at trial, had knowingly suppressed exculpatory and impeachment evidence, and had acted affirmatively to cover up such misconduct for 15 years.”