Search on for driver in deadly hit-and-run in Bay Shore, Long Island

BAY SHORE, Long Island (WABC) -- Police on Long Island have released new video showing the moments just before a deadly hit-and-run on Christmas Day in Bay Shore.

His mother fought back tears as she pleaded for help in Bay Shore.

Her son, 33-year-old Emmanuel deJesus Cruz Zavala, was killed in a hit and run on Candlewood Road on Christmas.

"Why did that person leave and did not help my child? I need justice for the death of my son," the victim's mother said.

It was 5 p.m. and Mr. Zavala was crossing the street to visit his mother for Christmas dinner.

Police released the disturbing video on YouTube, even the part we can't show you, because they're hoping whoever struck him has a conscience.

"It is a bit graphic, but it's important that we catch this perpetrator. If the perpetrator is watching this, I urge them to do the right thing," said Deputy Commissioner Timothy Sini, Suffolk County Police Department.

The community has been asking traffic officials for more stop signs on this road.

"Because we have kids who cross the street and we are scared, because so many people have accidents here," said Rosa Blanco, the victim's neighbor.

Three good Samaritans stopped to help the victim.

One man stepped into the roadway, placed the victim over his shoulder and moved his body out of harm's way while a woman provided the victim with medical care.

A third person who witnessed the incident stopped and attempted to follow the suspect.

Zavala was the father of three children who was working hard to send them money back in El Salvador.

Now, all his mother can hope for is justice.

"Because what happened to me, it can happen to someone else. And this pain is too big for me and my grandchildren, his kids," the victim's mother said.

The vehicle is described as a compact or mid-sized, gray or charcoal gray, four-door sedan that has a sunroof. Detectives believe there is damage to the passenger side fender or front area of the vehicle. The suspect fled southeast on Candlewood Road, towards Commack Road in Bay Shore.

Suffolk County Crime Stoppers offers a cash reward of up to $5,000 for information that leads to an arrest. Anyone with information is asked to call anonymously to Crime Stoppers at 1-800-220-TIPS.