Former England cricket captain Michael Vaughan believes that the guilty Pakistan trio are only three of many corrupt professionals in the game.

Former Pakistan captain Salman Butt, along with bowlers Mohammad Asif and Mohammad Amir, was jailed yesterday after being found guilty of cheating and corruption in the spot-fixing scandal.

"I hope [the prison sentences] send a shockwave through the game and I'm delighted with the way it's been handled," ESPN quotes Vaughan as saying.

"I still believe there are more out there and more can be done to try and catch more than just the three we've seen in court over the last few weeks."

Agent Mazhar Majeed was also given a prison sentence for his part in orchestrating the scam.