Security amped up at Stakes Day in Melb

Racegoers have experienced tougher security measures at Flemington on Stakes Day, in the wake of the Bourke Street terror attack which claimed the life of a man.

For the first time during the Melbourne Cup Carnival, each racegoer has been scanned at the entrances to the track.

Bags are also being closely inspected, leading to lengthy queues and delays.

Victoria Racing Club says there is a "sizeable security and policing operation" in place.

"We continue to work very closely with authorities to mitigate any risks and ensure everyone can enjoy a safe and fun day," a spokeswoman told AAP.

"Racegoers may experience minor delays as a result of an increased police and security presence at Flemington Racecourse today."