"He is suspended from bowling in international cricket until such time that he has submitted to a fresh analysis, which concludes that he has remedied his bowling action," ICC noted.
Meanwhile, the independent biomechanical analysis of the bowling action of West Indian cricketer Marlon Samuels concluded that his standard off-break delivery was bowled with a legal action, but that his quicker deliveries exceeded the 15 degrees' level of tolerance and thus, were considered to be illegal.
While he is allowed to continue to bowl his standard off-break delivery in international cricket, he is not permitted to bowl his quicker deliveries, ICC said.
"Should Samuels be reported again for a suspected illegal bowling action within the next two years, such a report will be deemed to be a second report for the purposes of the ICC Regulations," officials said.
"If the independent biomechanical analysis following the second report concludes that Samuels has an illegal action, whether it is for his quicker deliveries or any other type of delivery, he will be automatically suspended from bowling in international cricket for a minimum period of 12 months," the officials added.
The independent analyses of Shillingford and Samuels were performed by Associate Professor Jacque Alderson and her team at the School of Sport Science, Exercise and Health, The University of Western Australia (UWA) in Perth on Nov 29.
"The players have the right to appeal against UWA's conclusions to the Bowling Review Group. Should they choose to appeal, they must lodge written notification with the ICC within 14 days," officials said.
Shillingford and Samuels were reported at the end of the second day's play in the Mumbai Test against India last month by on-field umpires Richard Kettleborough and Nigel Llong, TV Umpire Vineet Kulkarni and Andy Pycroft of the Emirates Elite Panel of ICC Match Referees.
Both bowlers have previously been reported and suspended from bowling in international cricket after their bowling actions were found to be illegal.
They were, however, allowed to resume bowling in international cricket after they underwent remedial work on their bowling actions and further testing.
Shillingford was reported in Nov 2010 and resumed bowling in June 2011, while Samuels was reported in Feb 2008 and resumed bowling in Sept 2011.
--IBNS (Posted on 16-12-2013)