Three teenage girls have admitted killing a 75-year-old man in a vicious street attack that was filmed on a mobile phone.

Fredi Rivero was near a bus stop in Islington, north London, on February 27, when the teenagers got off a bus and surrounded him.

The youths, aged 15, 16 and 17, pushed, shoved, kicked and punched Mr Rivero, with one of them filming the incident on her phone and grabbing his glasses.

As part of the police investigation, officers recovered CCTV footage of the assault in which the oldest girl was seen to punch the victim in the head causing him to fall backwards.

Police were called at 11.25pm to reports of the disturbance and found Mr Rivero unconscious on the pavement with a severe head injury and in cardiac arrest.