Three of the five players were from Associate teams with two from Test-playing ICC Members. The ICC, as per its policy, will not reveal the identity or nationality of bowlers though the individual boards are at liberty to announce the names of their bowlers if they wish to.
The actions of the players were highlighted by a three-man Bowling Action Advisory Panel (BAAP) during the tournament, which took place across seven venues in Kuala Lumpur, Johor and Penang.
Those players identified are not eligible for selection for any national team until an assessment by their own boards" bowling advisors confirms either the action is legal or that, although it was illegal, it has now been remedied.
The BAAP in Malaysia was made up of Javagal Srinath of the Emirates Elite Panel of ICC Match Referees, Richard Done, the ICC's High Performance Manager, and biomechanist Marc Portus, who is a member of the ICC's panel of human movement specialists.
Members of the BAAP attended games individually and assessed bowling actions from various aspects of the ground and, if an action was deemed to be suspicious by a BAAP representative or match official, it was filmed wherever possible.
It is a repeat of the process that took place at the previous ICC U-19 CWC 2006 in Sri Lanka and ICC General Manager – Cricket Dave Richardson said it was an important step towards dealing with the problem of illegal actions in international cricket.
"By identifying any player who has a flaw in their technique at junior level, there is an opportunity to address the problem before they graduate to senior international cricket," said Richardson.