According to the Sydney Morning Herald, Tuffey, 35, and former teammates Chris Cairns and Lou Vincent were named in the media on Thursday as players being investigated by the International Cricket Council.
While Vincent confirmed on Thursday he was co-operating with the ICC anti-corruption and security officials, Tuffey joined Cairns in professing no knowledge of the investigation, the report said.
The seam bowler, who is based in Sydney, said he was shocked to learn from friends that he was being associated with fixing, the report added.
He didn't want to comment further until he had received legal advice, after which he said he planned to issue a statement, the report further said.
Tuffey, who took 187 wickets in an 11-year international career, is still to decide whether to play for his Sydney first-grade club on Saturday, according to the report.
--ANI (Posted on 07-12-2013)