A teenager was stabbed to death during an after school brawl allegedly over a girl where up to 80 other kids stood and filmed the fatal incident.

Khaseen Morris, 16, suffered fatal wounds after being charged at by multiple males as he walked home with his friends on Monday, in Oceanside, New York.

Nassau County Police were called to the scene outside Mario's Pizzeria and Restaurant at 3.45pm after the large fight between 10 males broke out.

Footage of the shocking scenes show Morris being thrown to the ground and later it appears he is bleeding, later determined to be from a knife-wound to the chest.

Not one person stepped in to help during the brutal assault.

Nassau County Police detective Lt. Stephen Fitzpatrick told a press conference: 'They would rather video this event. They videoed his death instead of helping him.'

He then addressed the teens directly: 'I don't know what to make of it, my generation versus this generation. This can't go on. Your friends are dying while you stand there and video it. That's egregious.'

Khaseen Morris (above), 16, has died after being stabbed to death during an alleged after school brawl near a pizzeria in Oceanside, New York

Up to seven males were involved in the incident and as many as 80 witnesses watching according to police. Footage taken from the attack shows Morris being thrown to the ground, where he is reported to be seen bleeding to death

Detective Vincent Garcia of Nassau County Police Department told DailyMail.com that there was a 'very active investigation' underway but no arrests had been made.

Garcia explained that there were as many as 80 witnesses to the incident and some were filming 'the assault going down' - some of those clips were posted on Snapchat

He told DailyMail.com: 'They were more busy videotaping the event than helping but because of that we have pretty good ideas of who we are looking for.

'Around 60 to 80 youths were there so we are asking for anyone with further information to please come forward.'

The attack happened near a pizzeria known to be a popular after school hangout spot for Oceanside High School students, where the victim attended.

Morris' older sister, who did not want to be named, said her brother had recently transferred to the school for a 'fresh start' in his senior year, moving from Freeport.

She claims that he was stabbed to death because he walked a girl home from a party on Sunday and stated: 'My brother didn't deserve that.

'The girl told her ex-boyfriend and said that 'Oh another boy walked me home' and she kind of set up this thing to get him jealous.

'He was going to got to school for photography but he always said he wanted to be a rock star.

'He was the most peaceful, loving person in the world,' she told NBC New York.

Grief counselors were on campus to help teens struggling with the loss at Oceanside High School.

Superintendent Phyllis Harrington said: 'We are heartbroken about this senseless tragedy. It is clearly a tragic loss.'

Morris had recently transferred to Oceanside High School for his senior year where it was hoped he could make a 'fresh start'

Police responded to the incident at around 3.45pm Monday outside Mario's Pizzeria and Restaurant in Oceanside, New York

No arrests have currently been made by police but they said thanks to videos being posted online they have an idea who they are looking for. One spokesman told DailyMail.com 'They were more busy videotaping the event than helping'

Detective Lieutenant Stephen Fitzpatrick of Nassau County Police Department told teens with any information to come forward at a press briefing on Tuesday.

He said: 'That dispute boiled over here, where a group of six to seven males charged at the victim and his couple of friends.

'If you're not a part and parcel of murder of Khaseen Morris now is the time to get in touch with us and let us know who did this and why.'

A fundraising page has been set-up for the boy that explains 'Morris' life was senselessly cut short' and is asking for $50,000 in donations to help cover funeral costs.

The site wrote: 'He leaves behind a family that was closer to each other than any family I've ever met.

'If we could take away their pain we would... We can't bring him back. We can't erase this time from their lives, but we can ease the financial burden that this family will encounter.'

In just over 24-hours the page had raised over $21,000 dollars and organizer Karen Ferraro thanked those who had donated.

She wrote: 'During a truly dark time is usually when you see the light. And this community and the supporters on this campaign are the glimmer of light for this family in their darkness.'