South African off-spinner Johan Botha has been reported for a suspect bowling action for the second time in his career, the International Cricket Council said on Wednesday.
Botha, 26, was reported by match officials after Monday's fourth one-day international against Australia in Port Elizabeth over concerns that he bends his arm while bowling the quicker ball.
Botha will undergo tests by the ICC's panel of human movement specialists, but can continue playing till the results of the tests are disclosed, the governing body said in a statement.
"If the player is found to have been bowling with an illegal action he will be suspended from bowling in international cricket with immediate effect," the ICC said.
"He would have the option of applying to the ICC for a re-assessment of his bowling action at any time in order to return to bowling in international cricket."
Botha will be tested within 21 days after Cricket South Africa receives a formal notice from the ICC and the appointed specialist will have to submit his report in 14 days.
The Johannesburg-based player was first reported on his Test debut in Sydney in 2006, but resumed playing the next year after his remodelled bowling action was cleared.
Cricket South Africa chief executive Gerald Majola was quoted by Cricinfo website as saying he was disappointed, but hoped Botha would be cleared in time for the World Twenty20 championships in England in June.
"It's very disappointing for the team, especially considering his performance over the recent past," Majola told the website.
"But there is nothing we can do. We will follow the procedure laid down by the ICC. Hopefully, he will be cleared before the World Twenty20."
Botha has played two Tests, 45 one-dayers and nine Twenty20 internationals and taken 52 wickets.