Closing arguments were delivered Wednesday in the murder trial against an NYPD sergeant.

Sgt. Hugh Barry is charged with second-degree murder, manslaughter and criminally negligent homicide in the Oct. 18, 2016 death of Deborah Danner.

Barry took the stand in his own defense Tuesday, testifying that he shot Danner because she was about to swing a bat at his head. The 66-year-old Danner was emotionally disturbed, and advocates argue that Barry did not follow proper protocol when responding to her Pugsley Avenue apartment in the Bronx.

On Wednesday, Barry's attorney worked to disprove and weaken the argument of the prosecution by saying Barry followed his training and the protocol put in place by the NYPD. He went on to say that Danner cannot be seen as an emotionally disturbed person because the moment she grabbed the bat, she become a person with a weapon. He said his client was clearly acting in self-defense, adding that the district attorney's argument is based on what would have happened.

The prosecution came out strong against inconsistencies they saw in Barry's testimony on Tuesday -- like how close Barry was to Danner at the time of the shooting and whether she actually swung the bat, which they believe would prove if Barry was in fact in imminent danger. They added that Barry was the only officer to draw his weapon, while a nearby officer and others in the room chose not to do so.

Bronx Supreme Court Judge Robert Neary is expected to issue his verdict Thursday morning. If convicted, Barry faces a maximum sentence of 25 years to life in prison.

Barry is the first on-duty NYPD officer to be charged with murder since 1999.