A MASKED thug has threatened to “smash up” Amir Khan after the boxer allegedly fought off his gang in Birmingham.

The threat has been broadcast on YouTube just days after six men allegedly tried to steal Amir’s £100,000 Range Rover on Monday, October 8.

Amir and his younger brother Haroon, a soon to be pro-boxer, reportedly fought back after the attack.

But in the video, the masked thug questions Amir’s version of events while issuing him with a number of threats.

He holds up car keys, a wallet and a bag, claiming that they have been taken from Amir.

A spokesperson for Amir Khan said they could not comment on the incident and it was being investigated by West Midlands Police.