Teenagers who murdered for amusement: A 13-year-old girl who recorded a 15-year-old boy beating an elderly dog walker with a slider while shouting racist epithets was convicted of murder.

The court heard the girl regularly ‘recorded violence’ on her mobile phone, and had dozens of other recordings showing children fighting each other and another where an unidentified victim was called a ‘P***’ and had something thrown over him.

The three video clips of the attack on Mr Kohli were recovered from the girl’s mobile phone in a section of Snapchat called ‘my eyes only’ which requires a code for access, which the prosecution said was an attempt to hide the evidence.

She was accused of ‘egging’ on the boy, and remained with him during the attack to ‘support’ him when other teenagers they were with ran away.

In a police interview she was asked if the video showing Mr Kohli being slapped with the shoe had given her enjoyment. She replied: ‘Not really but it was a bit funny at the time.’