West Indian off-spinners Marlon Samuels and Shane Shillingford have been reported for suspected illegal bowling actions following the Test series in India.
Both men, who have been reported and banned previously, will have to undergo testing within 21 days before they can either be cleared to bowl again or undergo remedial work on their actions.
Shillingford was banned in December 2010 for an illegal action and was cleared to return after undergoing testing and working on his action in June 2011.
Samuels' faster ball was reported in January 2008 although following testing, he was banned from bowling one month afterwards after both his regular and faster deliveries involved his arm straightening more than the 15 degrees that is permitted in international cricket.
He was cleared to bowl again in September 2011, after he had also served a ban for his involvement with a bookmaker.
They were both reported by match officials Nigel Llong, Richard Kettleborough, Vineet Kulkarni and Andy Pycroft after the second Test against India at the Wankhede Stadium in India.
The reports have highlighted Samuels' quicker delivery and Shillingford's doosra as causes for concern.
The two players must now submit an independent analysis of their bowling action and if independent assessment of the analysis shows an illegal bowling action they will be suspended from bowling in international cricket.
Until the assessment is complete, the two players are allowed to continue bowling.
The West Indies were heavily beaten in both Test matches despite Shillingford taking 11 wickets and becoming the last man to dismiss Sachin Tendulkar in international cricket.
© Cricket World 2013