New Zealand’s star and off-spinner Kane Williamson’s bowling has been found illegal and as a result barred from bowling after biomechanical tests, a press release from New Zealand Cricket (NZC) confirmed on Wednesday.

Kane Williamson was reported by match referee after New Zealand’s 10-wicket defeat in the second Test in the West Indies. So the International Cricket Council (ICC) suggested him to undergo independent testing of his bowling action.

The result of tests, which took place at Cardiff Metropolitan University, established that his elbow extension exceeded the 15 degrees of flex permitted under ICC regulations, and hence his bowling action was deemed illegal, NZC said.

Meanwhile, Williamson said he is determined to change his action and pass the biomechanical tests so he could once again bowl.

“(I) will concentrate on changing whatever’s necessary to return to the bowling crease,” the 23-year-old said.

“Clearly, the onus is on me to satisfy assessors as to the legality of my action, and I’m aware I have some hard work in front of me to achieve that goal,” Williamson concluded.