After a 24-year-old man was fatally shot in Newburgh, police are now searching for clues to find out who is responsible for his death. Our Elaina Athans has the latest.

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NEWBURGH, N.Y. -- A homicide investigation is underway in the City of Newburgh. Keith Chapman, 24, was shot and killed Tuesday night.

Police believe a rifle may have been used based on the type of shell casings that were found. Chapman was killed near Benkard Avenue and William Street. The shooting happened around 9:45 p.m.

Pamela McKoy says she saw Chapman shortly after the shots were first fired. McKoy says he collapsed on their stairwell and was bleeding.

"He said 'Help me, I'm dying'," said McKoy. "I was just scared."

Police say multiple shots were fired during the incident and there were signs of the violence all over the area. There were shell casings on top of cars and vehicles pierced with bullets.

Newburgh police officers canvassed the neighborhood going door to door and talking to residents about what transpired.

Mayor Judy Kennedy also toured the site of the fatal shooting. This is the fourth homicide in Newburgh this year and comes after the city spent the entire summer working with the Department of Justice on an anti-violence initiative.

"I can't tell you how much this makes my heart hurt. It just makes me very upset. But it also increases my determination that we'll press even hard, even further to do something about violence prevention in this city," said Mayor Judy Kennedy.

There have been no arrests and police do not have a description of the shooter.