According to authorities, at around 7 p.m. the suspect approached a locked Sunoco station on Boston Road.
Videos shows the victim, a 59-year-old man who worked at the station, unlocking the door to assist the suspect. The two have a short conversation before the suspect displays a firearm and shoots the man in the head roughly two times from point-blank range.
The suspect then fled the scene in an unknown direction.
EMS responded and rushed the victim to NYC Health and Hosptials/Jacobi where he is listed in critical condition.
The suspect is described as a man last seen wearing a black hooded sweatshirt and black boots.
Anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782). The public can also submit their tips by logging onto the CrimeStoppers website at https://crimestoppers.nypdonline.org/or on Twitter @NYPDTips.
Police say all calls are strictly confidential.