Muralitharan could soon become Test cricket's record wicket-taker

Professor Bruce Elliott told BBC Sport: "It is true Muralitharan's arm does extend by 10 degrees, which is double the ICC's legal limit of five."

Sri Lanka Cricket officials have now sent Professor Elliott's report to the International Cricket Council, but he wants to continue his involvement.

"I want to sit down with the ICC to talk about the findings," he added.

Professor Elliott's team conducted detailed analysis of Muralitharan's action after it was queried by match referee Chris Broad following the recent home series against Australia.

And the Sri Lankan risks being banned from cricket for 12 months if his action is reported by umpires or match referees again this year.

At this stage, any decision or action arising from the investigation is the responsibility of SLC and Muralitharan is continuing to play international cricket in Zimbabwe.

The ICC will only act should Muralitharan be reported again, and it would then have the power to suspend him.

Academy: What is a 'doosra'?

The "doosra" is a ball which spins away from a right-handed batsman, the opposite of an orthodox off-break.

And the ICC has already confirmed it would not relax the five-degree "level of tolerance" for a spin bowler's arm.

They are, however, conducting research into the actions of spin bowlers.

"If, at some yet to be determined point in the future and as a result of a proper research program, there is evidence to support a change to these regulations, then such a change will be considered," chief executive Malolm Speed commented.

Muralitharan was born with a bent arm and a previous investigation by Professor Elliott's team his action gave an "optical illusion" of throwing.

The 'doosra' delivery is, however, a variation he introduced during the home series against England last year.