Khaseen Morris was a 16-year-old from Long Island, New York.

After being attacked outside a strip mall, Morris was stabbed and began bleeding out.

Though the situation was already tragic, police report things took an even more disturbing turn. While Morris was dying, 50 teens reportedly stood nearby, posting pictures and videos of him on social media.

None stepped forward to help stop the bleeding.

Morris would die from his injuries later that night.

The incident allegedly arose after Morris walked another young man's girlfriend home from the movies the previous weekend. After dropping her off safely at the door, he skateboarded home, but began receiving threats from the girl's boyfriend.

Khaseen, who his sister described as "peaceful," told her that if someone fought him he would protect himself but he didn't intend to hurt anyone. He didn't expect anyone to bring a weapon.

Nassau County Police Department Detective Lt. Stephen Fitzpatrick spoke about the incident with disgust at a press conference.

"Kids stood here and didn't help Khaseen — they would rather video this event. They videoed his death instead of helping him. Your friends are dying while you're standing there and videoing it. That's egregious."

Police arrested one individual for the stabbing, but are still investigating several suspects that were named in Snapchat posts.

Keyanna Morris, 30, Khaseen's sister, described him to Buzzfeed News.

"Khaseen was loved by everyone and literally loved everyone. He always said he would change the world. He wanted the world to be so much better than it was. Didn't matter if you were black, white, Hispanic, gay, straight, he loved every color."

Khaseen had just returned to high school to complete his senior year and told his family things were going well.

"He was smiling from ear to ear on his first day. He told my mom, 'This is the happiest I've ever been in so long.'"

His schoolmates were equally glad to have him among them.

"Everyone reached out and said how much he changed the school with how positive he was — no one could be down or depressed around him."

Now, the family's distress is being amplified by videos of Morris dying circulating on social media.

Those close to the family have been reporting it any time it appears online and "hope that it stays down."

Keyanna hopes the bystanders who watched her brother die learned a lesson from her loss.

"These kids even said they want to change, and they want to put their phones down now and actually help. Because I guess they realize now if they would've put their phones down, Khaseen would've probably made it."

Keyanna Morris' friends started a GoFundMe for the family.

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