India's Shikhar Dhawan has been reported for a suspect bowling action, the International Cricket Council (ICC) said on Wednesday.
Dhawan, a part-time off-spinner who has bowled a total of just nine overs in his Test career, was reported following the fourth Test against South Africa in Delhi.
As the Proteas stonewalled the Indian bowlers on the final day, frustrated skipper Virat Kohli brought on Dhawan who bowled just three overs for nine runs.
India eventually won the match by 337 runs and sealed the four-Test series 3-0.
"Dhawan's bowling action will now be scrutinised further under the ICC process relating to suspected illegal bowling actions," the ICC said in a statement.
Dhawan is required to undergo testing within 14 days will be allowed to play on until the results of the tests are declared, the sport's governing body said.
Dhawan has made 1308 runs in 19 Tests but has never taken a wicket from the nine overs he has bowled in those matches.
He has taken a total of 16 wickets across all forms of domestic cricket and boasts best first-class figures of 2-30.