The man being questioned over the horror at Liverpool Football Club's victory parade is a former Royal Marine commando who was dropping a friend off as a favour when he ploughed into fans, it emerged today.

A close friend told the Mail that the 53-year-old 'panicked' when his car was surrounded by supporters, who opened his car door and 'grabbed his throat.'

'He was trying to get out of the parade and he has panicked,' the friend said.

'I believe he was doing someone a favour and dropping his wife's friend and her daughter off for an appointment.

'He has had the window smashed, people were trying to get into the car, he has had his throat grabbed and he has panicked.'