BROOKLYN, N.Y. - The search is on for the person who killed an off-duty firefighter in what sources call a road rage attack.

The NYPD wants to find the driver of a grey or silver 2006 Infiniti G-35 with this New York plate: JEA2402.

Police say a car driven by 33-year-old firefighter Faizal Coto collided with the Infiniti as they merged onto the Belt Parkway in Bay Ridge early Sunday morning.

Sources tell NY1 the other driver attacked Coto after they got into an argument.

Coto was later found unconscious with several head trauma.

He died at the hospital.

Coto had served in the fire department for three years with Engine Company 245 in Coney Island.

Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577-8477, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com.