Olly Stephens, 13, was stabbed to death in Emmer Green in Reading on Sunday (Picture: PA)

Three teenagers have been charged with murder and conspiracy to commit grievous bodily harm after an autistic 13-year-old was stabbed to death in Reading.

Oliver Lucas Stephens, who was known as Olly, died at the scene of the attack at Bugs Bottom fields, Emmer Green.

A 13-year-old girl and two boys, 13 and 14, have been charged with murder and conspiracy to commit grievous bodily harm.

The trio, all from Reading, have been remanded in custody to appear in court on Thursday.

Flowers and tributes are left outside Highdown school where Oliver Stephens was a pupil (Picture: Geoff Swaine/REX) Olly ’s friends leave tributes and read the messages left outside Highdown School (Picture: Geoff Swaine/REX)

Two other boys, both aged 13, have been released on bail with strict conditions until February 1.

Olly ’s family described the youngster as ‘an enigma ’ who ‘could get his own way with a wry smile and a cheeky grin ’.

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They said: ‘He always stood his ground and fought for the underdog whilst having an amazing depth of love, warmth and wit.

‘In his final moments he must have been terrified. Fighting to get home, he had everything to live for.

Forensic officers at the murder scene in Bugs Bottom field in Emmer Green, Reading (Picture: PA)

‘We now have only memories. An Olly-sized hole has been left in our hearts. ’

The family described the ordeal as ‘every parents ’ worst nightmare ’.

But they want to highlight the people who tried to help Olly at the scene, including ‘a Good Samaritan that tried valiantly to save Oliver ’, an off-duty doctor who offered help, and the emergency services.

Officers were called just before 4pm on Sunday following reports of a stabbing at the park, which is popular with dog walkers, joggers and families.