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A 15-year-old schoolboy has been arrested on suspicion of murder after a young rapper was stabbed in the chest near a house party.

Paramedics desperately tried to save the 16-year-old, named locally as 'talented' musician Showkey, but he died at the scene in Peckham, South London, just before 7.20pm on Friday.

Police launched a murder investigation and say that they have today detained a boy, aged 15, who remains in custody.

Shocking video footage emerged showing the rapper lying in a pool of blood as police worked on him in front of a crowd of shocked teenagers.

The graphic footage, which we have chosen not to publish, was circulated on social media on Friday night.

(Image: Instagram / bpm_ws1) (Image: Instagram / bpm_ws1)

His death comes just months after his friend and fellow musician Myron Isaac Yarde, 17, was knifed to death after a fight allegedly broke out between youths.

The funeral for Myron, who rapped under the name Mdot, was held only weeks ago and Showkey released a poignant rap tribute telling of his pain after his friend's death.

It includes the lyrics: "Is the streets really worth it? The good die young and my n***** was almost perfect."

Tributes have flooded social media in the hours after Showkey, whose real name is believed to be Leoan, was stabbed.

Award-winning rapper Giggs led the tributes to the youngster, saying he was "proper sad" to hear of the tragedy and that he was a fan of his music.

Writing on Twitter he said: "RIP to Showkey, I'm proper sad to hear that man.

"Bad boy artist man, proper heavy spitter.

"I was a fan,and I'm proper sad to even post this man.

"Proper feel it for his parents man, my thoughts and prayers go out to them."

He also used as an opportunity to tell young people to "get out of the hood".

(Image: Getty)

"Come on my young g's, I keep telling you we don't have to live like this anymore.

"God has provided us with more then a few ways to get out the hood now."

A man posted a picture of the teenager on Instagram with the caption: "Bro, I love you so much and I can't live without you but everything is done for a reason.

"Your legacy remains and you linked with Mdot earlier than expected.

"I wish I was close enough to you when it happened so I could protect you but I wasn't.... I know you had plans for the future.... will definitely see each other one day... I LOVE YOU Leoan."

Another friend shared a picture, thought to show Showkey with Myron and the pal, saying: "I got you brother I know your just resting word."

(Image: PA) (Image: PA)

Twitter user Ben McKeown said: "RIP Showkey, one of the most talented people in the scene, can't believe it" while @MdotE posted: "Another young talent lost... RIP Showkey.. Thoughts are with his family".

Just a week ago Showkey tweeted: "If i die dont cry for me n***a go put the bally on...."

The last ever video of one of Showkey's freestyle battles, Daily Duppy, for Grime Daily has been prominently shared on social media today.

(Image: Facebook)

A police spokesman said: "Police were called to Colegrove Road, Peckham, at just after 7.15pm last night after reports of a disturbance near a house party.

"They found a teenage boy, believed to be aged 16, suffering from stab wounds to the upper body.

"London Ambulance Service and London Air Ambulance attended but he died at the scene a short while later.

"A crime scene remains in place and a number of weapons have been recovered by investigating officers."

A post-mortem examination gave cause of death as a stab wound to chest.

Officers are appealing for witnesses who may have been attending what they describe as a "large house party".

Anyone with information should call police on 101 or Crimestoppers on 0800 555 111.