A boy, aged 17, has admitted he threw a stone which smashed through the window of a taxi in Edgbaston and left an elderly woman injured.
The woman, in her 70s, was taken to hospital with a fractured skull after being hit while travelling in a back seat, at around 10pm on Wednesday 25th May.
The boy admitted causing the damage and injury to the woman at Birmingham Youth Court. He said he was drunk at the time.
The on-board footage which showed the stone smash through the glass and hit the passenger in Bellevue Road, went viral after being released on Birmingham Updates (BU).
Four teenager boys, aged 16, 17 and 15, who cannot be named for legal reasons, were arrested on suspicion of wounding following an investigation by the Birmingham South partnerships team.
The four teenagers will be sentenced in February.