Taser Incident Kills Officer and Victim

This is once case in which the extrajudicial police electrocution of an emotionally disabled New York resident had consequences, when it lead to the suicide death of a career police officer. The New York Times reports,

Lieutenant Pigott, apparently distraught because he had authorized the Taser shooting last week of an emotionally disturbed man who pitched headlong to his death from a second-story building ledge, fatally shot himself on Thursday at the headquarters of the Emergency Services Unit in Brooklyn, the police said.

The lieutenant, who had been stripped of his gun and badge and placed on desk duty in another unit after the Taser incident, killed himself with a single shot to the head from a 9-millimeter Glock handgun taken from another officer’s locker at Floyd Bennett Field, a former airfield in Brooklyn where several police divisions are located, officials said. More in the New York Times

So, this is what I'd like to know: Did the officer kill himself because he felt guilty about having killed a mentally disabled man, or did the officer commit suicide because he was embarrassed and/or distraught about finding himself in a desk job? I'd like to think that one police officer in America felt guilty, but I suspect he just killed himself out of self-pity.