Jon Wilson was found seriously injured after a brutal street attack near a cinema in Queen’s Drive, Kilmarnock, East Ayrshire, in the early hours of Sunday.
Detectives are examining whether the attack is linked to a street assault and robbery that happened in the area around the same time.
The Kilmarnock Academy pupil was taken by ambulance to the town’s Crosshouse Hospital where he died with his parents at his bedside.
Jordan McCreadie, 16, from Kilmarnock, appeared in court on Monday charged with murder.
He made no plea or declaration at Kilmarnock Sheriff Court and was remanded in custody.
Family members, including aunt Jean McMurdo have described their disgust at the alleged attack. She posted her tribute on a social network site yesterday which said: “RIP wee man. Taken from our lives and hearts to quickly.”
And Cousin Emma Wilson added: “RIP baby boy. Always in our thoughts.”
Strathclyde Police have confirmed they are looking into a “disturbing” memorial website to Jon that featured “sick” pictures of the youngster.
Nearly 6000 had joined the “memorial” dedicated to the teenager on the social networking website Facebook by yesterday evening believing it to be a genuine tribute group.
But there was outrage as the site appeared to show graphically offensive pictures of the teenager.
The site has been reported to the police and Facebook administrators.
By yesterday evening, the offensive photographs had been removed.
By then family members had endorsed a separate tribute group, which is understood to have been started in response.
Strathclyde Police said inquiries were continuing into the Facebook site and that it has been “passed to the appropriate department to progress as appropriate”.
A spokesman also said further inquiries were being made in connection with the alleged murder but nobody else had been charged.
It is understood that the youngster’s parents, John and Nanette, split up four years ago and that the teenager moved from Auchinleck to live with his mother in Gateside Place.
It is thought he was at a sleepover at a friend’s house but decided to go home.
The alarm was raised when a passer-by found him badly injured.
Meanwhile, floral tributes from friends of the youth were yesterday placed near the scene of the attack in Queen’s Drive. Police tape sealed off a small stretch of pavement. One note read: “Another angel in heaven” and “Rest in peace, wee man. Gone but not forgotten.” A card that appeared to have been signed by several of the teenager’s friends bore a number of messages, including: “Had some good times, mate. Gonna miss yi.”
A Rangers top lay close to a yellow teddy bear, with a message attached saying: “God love and bless you wee man. With angels now and at peace. Thoughts go out to you and all your friends and family.”
In nearby Gateside Place, where Jon lived, a neighbour in her 70s, on her way to pick up her own grandchild, said: “It’s tragic that a boy that young should die like that.”