"I think the ICC should rethink its decision against Taskin. This is sheer injustice. If there is any setback in Bangladesh cricket, this is it. Bangladesh cricket has been finished," Nazmul told Bangladesh reporters.
"Taskin was a major bowler for the team. He is not only the fastest among the Bangladesh bowlers but also one of the fastest in the whole World T20. He has been playing regularly for Bangladesh for the last two years now. It is hard to accept his suspension," he added.
"All my life I knew that a bowler gets suspended if he bowls an illegal delivery in a particular game. But Taskin got suspended despite not having bowled any illegal delivery in that game (against the Netherlands). This has happened for the first time in history.
"The match referee (Andy Pycroft) had said all of his deliveries in that game were suspicious but during the test, none of the deliveries were found illegal. So, this is a new learning curve for us in that a bowler can get suspended in this way. This is something new to us," he said.
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Nazmul said anyone who thought his claims about Taskin were incorrect should come forward and challenge him.
"If anyone thinks that I am wrong, they should come and prove me wrong. The ICC still has the opportunity to prove me wrong. The World Cup is still ongoing, let's see if they can suspect two bowlers of any team and suspend them. Let them set an example, then I will have nothing to say on Taskin issue. I cannot accept a suspension that has come for no reason and against a key bowler of a team," he said.
"All my life I knew that a bowler gets suspended if he bowls an illegal delivery in a particular game. But Taskin got suspended despite not having bowled any illegal delivery in that game (against the Netherlands). This has happened for the first time in history.
"The match referee (Andy Pycroft) had said all of his deliveries in that game were suspicious but during the test, none of the deliveries were found illegal. So, this is a new learning curve for us in that a bowler can get suspended in this way. This is something new to us," he said.