Seven New York teens caught on video beating Khaseen Morris (pictured), 16, after he already had been fatally stabbed were charged with felonies last week for their roles in the horrific September 16 homicide

The seven New York teenagers caught on video beating a defenseless 16-year-old boy who had already been fatally stabbed, are being charged with felonies for their roles in the horrific incident.

Police say Tyler Flach, 18, of Lido Beach, New York is allegedly the man who plunged a knife into 16-year-old Khaseen Morris' heart multiple times outside a Long Island strip mall on September 16.

Seven co-conspirators reportedly then pummeled the unarmed and outnumbered teen while an estimated 50 bystanders watched and did nothing except record with their smart phones.

At least one person broadcast the deadly encounter on Snapchat.

Flach's alleged accomplices - Haakim Mechan, 19, Marquis Stephens, Jr. and Javonte Neals, both 18, Taj Woodruff and Sean Merritt, both 17 - were all arrested and charged with second degree gang assault last week.

Two additional 16-year-olds, who also received felony gang assault charges, have not been identified because they are underage.

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Tyler Flach (left), 18, of Lido Beach, New York is the man who plunged a knife into 16-year-old Khaseen Morris' heart multiple times outside a Long Island strip mall two week ago. He was arrested and charged with murder days after the incident. Taj Woodruff (right), 17, was one of seven teens charged with gang assault last week for punching and kicking Morris after he had been stabbed

Javonte Neals (left) and Marquis Stephens Jr. (right), both 18, were charged with gang assault for their roles in the deadly September 16 attack on Morris outside a Long Island strip mall

Haakim Mechan (left), 19, and Sean Merritt, 17, were charged with gang assault last week for their roles in Morris' stabbing death. All seven accomplices were arraigned in Hempstead, New York's First District Court on Saturday

None of the seven accomplices are gang members, police said. Their gang assault charge relates to the group allegedly committing a violent act together.

All seven gang assault suspects were arraigned in Hempstead, New York's First District Court on Saturday. Morris' family attended the court hearing before traveling to a local funeral home to say their final farewells the same day.

They reportedly were joined by hundreds of mourners who remembered the the 16-year-old as an energetic young man full of life who had a bright future ahead of him.

'He wanted to go to college for photography,' Khaseen's sister, Kedeemah Morris, told Pix 11 on Saturday, her hair adorned with purple flowers - her late brother's favorite color. 'He drew a lot. He wrote music. He liked to dance. He was a comedian. He was probably the funniest person you would ever meet in your life...'

The family and friends of Khaseen Morris, 16, laid his body to rest on Saturday after a ceremony at Tower Funeral Home in Long Island, New York

Khaseen's sister, Kedeemah Morris, said her brother wanted to study photography in college

Family and loved ones of Khaseen Morris leave Hempstead, New York's First District Court after his alleged attackers' arraignment on Saturday

Khaseen Morris supporters stand inside Hempstead, New York's First District Court Saturday

'Everything about my brother I'm going to miss,' she added. 'I saw him right before it happened. I wish I would have told him to stay home.'

The melee reportedly started over another juvenile's ex-girlfriend. Investigators said Flach was an 'associate' of the girl’s ex-boyfriend, who may have been jealous over Morris’ friendship with the girl.

'It was completely unnecessary. It just shouldn't have happened,' Morris family friend Jakye Walters told WABC-TV. ''[Khaseen] was just a nice person that was really funny, loved life.'

Flach was arrested and charged with murder three days after the incident. He and Stephens are being held at Nassau County Jail.