Investigators believe a dispute over a cab fare may led to the murder of a green taxi driver early Monday morning. Police have now released video of the suspect wanted for the murder of driver Mamadou Barry.

According to the NYPD, Barry picked up a fare near East 138 Street between Cypress Avenue and Brook Avenue: "The victim then drove the suspect to the vicinity of East 189 Street and Beaumont Avenue where he displayed a firearm and shot the victim in the head in front of 2470 Beaumont Avenue. The suspect fled southbound on Crotona Avenue towards East 187th Street." Police responded to a 911 call at 1:26 a.m. and found Barry in the driver's seat.

Here's the video; police describe the suspect as having a medium complexion and thin build, and was wearing a red hooded sweater with light colored shorts.

Barry had three children and was expecting a fourth; his grieving wife Kadiatou Jolloh told the NY Times, "He loved me, he loved me, he loved me, he loved me."

“He worked so hard to provide for me and my kids,” Ms. Jolloh, 26, said. “He worked seven days a week, even if he was sick.”

“Someone took him for no reason,” she said. “He won’t see his baby.”

She began to sob.

The NYPD's Chief of Detectives Robert Boyce said, "He was murdered, we believe, in a dispute over the fare that he had picked up," and NYPD Commissioner Bill Bratton said he was an "innocent" victim.

Anyone with information in regards to this incident is asked to call Crime stoppers at 1-800-577-TIPS (8477). The public can also submit their tips by logging onto the Crime stoppers website at WWW.NYPDCRIMESTOPPERS.COM or by texting their tips to 274637 (CRIMES) then enter TIP577.