Australia captain Ricky Ponting said Wednesday his team has done all it can to assist the International Cricket Council's investigation into an approach to an Australian player by a suspected bookmaker during the Ashes.

"As players and a team we are doing everything we are supposed to do by the letter of the law and reported it to the ICC," Ponting told reporters at The Oval, where he is preparing to lead Australia in the Ashes-deciding fifth Test from Thursday. "It is now an ICC investigation so there is no more we can say about it because the investigation is going on. That's it."

The ICC confirmed Wednesday morning Australia had contacted its anti-corruption and security unit (ACSU) about the incident, though the ICC said there was no evidence the Ashes or the Twenty20 World Cup in England - where it is speculated another approach was made - witnessed illegal activity.

"The ICC can confirm that it's Anti-Corruption and Security Unit has received a report from the Australia team management concerning an approach to one of its players by a man suspected of links to illegal bookmaking," an ICC press release said.

"There is no evidence of any illegal activity as a result of this approach, which took place following the second Test at Lord's in July, and the ICC would like to place on record its praise for the player approached and the Australia team management for reporting the issue." The ICC set up its ACSU in 2001 after revelations about several high-profile players being implicated in match-fixing operations with illegal bookmakers, mainly based in India.