A 14-year-old boy has become one of the youngest people to be convicted of manslaughter in Avon and Somerset after stabbing a man death.
The defendant, who cannot be named for legal reasons, attacked 39-year-old Darren Edgington in the St Pauls area of Bristol on June 21 after an argument.
Although quoted as having a 'fixation with knives', the teenager was acquitted of murdering Mr Edgington.
However a jury unanimously convicted him of manslaughter.
An mobile phone seized after the boy's arrest suggested he had attempted to buy two knives online in February.
He had also viewed news stories involving fatal stabbings, and had more than 600 pictures of knives stored on the phone.
The court heard the defendant got into an argument with Mr Edgington about a stolen bike outside a shop on Grosvenor Road at around 5.40pm.
A woman driving past heard the defendant say "I'm going to kill", with others shouting "let's do it".
The boy and Mr Edgington then cycled away, while apparently being filmed by one of the boy's friends.
The victim died about five minutes after first meeting the defendant, from a stab wound to the chest.
Police said they were aware of a history of 'vulnerability and criminal exploitation' in the boy's background, and that the incident remains a tragedy for everyone involved.
The teen is expected to be sentenced early next year.