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.

He went on the run and later tried to claim Mr Kohli had pulled a knife in an attempt to justify the violence. But Mr Kohli’s family said he never carried a knife, and no knife was found at the scene.

The girl had a picture of Mr Kohli on her phone, taken a week before the attack, and pointed him out to the boy when they saw him in the park following previous run ins with him.

The photograph of Mr Kohli was at around the same time of day as he was attacked, with prosecutors accusing her of keeping the image on her phone so she could ‘target him’.