His lawyer says Assemblyman Vito Lopez also doesn't plan to testify in an inquiry into the matter by a special prosecutor.
Gerald Lefcourt told The New York Times he's advised Lopez not to testify in either inquiry because of the criminal investigation.
Until he knows specifically what the district attorney is looking, Lefcourt's advice is to provide all the information he can short of having Lopez testify.
The committee has issued a subpoena for Lopez's testimony. It has declined to comment.
The prosecutor's office couldn't immediately be reached for comment. It hasn't asked Lopez to testify.
The Democrat maintains the allegations are untrue.