A Florida man who claimed he fatally shot an unarmed man in self-defense after the two squabbled over a handicapped parking space was sentenced Thursday to 20 years in prison.

Michael Drejka, 49, was found guilty of manslaughter in August in the death of Markeis McGlockton, a 28-year-old man, in the parking lot of a Clearwater convenience store in July 2018.

Described by Circuit Court Judge Joseph Bulone as a “wanna-be” police officer and a self-appointed “handicapped parking space monitor,” Drejka confronted McGlockton’s girlfriend, questioning why she parked in a handicap-reserved parking space without a permit.