JOCKEY Kieren Fallon was due to return to action on the racecourse today after his arrest over allegations of involvement in a massive race-fixing scam.

JOCKEY Kieren Fallon was due to return to action on the racecourse today after his arrest over allegations of involvement in a massive race-fixing scam.

The 39-year-old, who denies any wrongdoing, had six booked rides at the Salisbury meeting this afternoon.

A Jockey Club spokesman confirmed Suffolk-based Fallon is free to continue riding as he has not been charged with any criminal offence.

The two other jockeys arrested in connection with the fraud probe, Fergal Lynch and Darren Williams, are also due to ride at Redcar and Carlisle.

Detectives investigating a series of alleged frauds covering more than 80 races around the country during the past two years held 16 people in dawn raids yesterday morning.

More than 130 officers searched 19 addresses across Suffolk, North Yorkshire, South Yorkshire and Hertfordshire. The suspects were arrested for "conspiracy to defraud".

Fallon's home, in Cowlinge, near Newmarket, was one of those raided yesterday. The six times champion jockey and three-time Derby winner was then taken to Bury St Edmunds police station for questioning.

After being quizzed for 12 hours, the married father-of-three was released at about 5.30pm yesterday. He immediately attempted to avoid the awaiting media scrum by vaulting over railings at the front of the station and sprinting towards Swan Lane, where a car was waiting for him.

He will now return to a London police station in two months.

Fallon revealed police had questioned him over his involvement with Miles Rodgers, formerly a director of the Platinum Racing Club syndicate.

His solicitor, Christopher Stewart-Moore, proclaimed the jockey's innocence after his release.

The probe hinges on records of irregular betting provided to police by Betfair.

The Internet site passed its information on the alleged scam to the Jockey Club's security department, who in turn called the City of London Police.

That sparked the nationwide arrests, which also included high profile trainer Karl Burke and 12 other people.

Four men were from Barnsley, two men and one woman from Sheffield, one man from Doncaster, two from Stevenage, one man from Minskip, North Yorkshire, two men from Leyburn, North Yorkshire and three men from Newmarket.

The scale of yesterday's police operation was biggest investigation of alleged malpractice in a sport that has been riddled by scandal in recent years.

All the suspects have now been released on unconditional bail.