NBC Washington – Police are investigating a fatal stabbing of a 17-year-old boy in southeast D.C. Wednesday night.

Officers were called to the 4600 block of Hillside Road SE just before 9 p.m. and found the teen  suffering from a stab wound. He died from the injury at an area hospital.

“My brother died on my lap, and I couldn’t do nothing about it,” said his sister Patricia Hart.

Family members identified the victim as Ernest Hart Jr. They told NBC4’s Pat Collins a 24-year-old man stabbed Hart in the neck after getting into an argument with him over a piece of chicken at a cookout attended by 10-20 people.

“All of us turned around and all we saw was blood just dripping from my little brother, and he fell to the ground,” said his brother Steven Hart.

Octavais Brown, who was at the scene, said medics took a long time to arrive.

“It felt like forever,” she said. “I wasn’t counting minutes. I was holding his pulse.”

She added, “I knew he was gone when they got here.”

According to D.C. Fire, emergency vehicles were dispatched at 9:17 p.m. A fire truck without a medic on board arrived at 9:23 p.m. A basic ambulance with medical technicians arrived at 9:28 p.m. An advanced life-support vehicle with paramedics arrived at 9:30 p.m. Hart  was transported from the scene in the advanced life-support vehicle at 9:41 p.m.

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