The Mercer County Homicide Task Force responded to a Shot Spotter activation at approximately 5:20 p.m. in the area of Oakland Street and Hoffman Avenue.
They located the victim on the sidewalk suffering from multiple gunshot wounds.
Officials say he was pronounced dead at the scene.
The victim has been identified as Dontae Barnes, 37, of Trenton.
No arrests have been made and the investigation is ongoing.