WOODBURY - Nassau County Executive Ed Mangano has responded to the controversy involving an off-duty Nassau County police officer who shot an unarmed man.

An internal affairs investigation shows Nassau officer Anthony DiLeonardo "unlawfully" shot Thomas Moroughan, an unarmed taxi driver, in Huntington Station 28 months ago today. Investigators determined that DiLeonardo and a fellow officer had been drinking ahead of the incident. DiLeonardo has never been criminally charged and remains on the job.

At an unrelated news conference today, Mangano told News 12, "We expect our police commissioner to do a full and thorough investigation and apply the appropriate discipline as he deems fit in the police department."

Mangano called the idea that there is double standard for Nassau police and residents "ridiculous."

Internal affairs investigators recommended 19 departmental charges for DiLeonardo. Police Commissioner Thomas Dale will not say if any disciplinary action has been taken.

Suffolk District Attorney Thomas Spota says his office has been unable to bring this case to a grand jury because Moroughan and his girlfriend "refused to speak" to his investigators. He also says that any information discovered in an internal affairs investigation can't be used in a criminal prosecution.

For Exec. Mangano's remarks on the case, watch the clip to the left or click News 12 Extra on Optimum TV channel 612.