"Tamim has a Grade 1 strain on his right groin which has been confirmed following an MRI," Bangladesh team physio Bayjedul Islam Khan said. "We will maintain a conservative treatment protocol for him for two weeks after which his rehab will begin. Unfortunately it means he will not be available for the ODI series and will be doubtful for the Test series."

"Taskin is out of the first ODI and we will know about his availability for the rest of the ODI series only after another fitness test," Bangladesh's chief selector Minhajul Abedin told ESPNcricinfo earlier on Thursday.

Taskin suffered the injury during a BCL match on November 20 for which he has been taking a pain-killer injection for the last few days. He has emerged as the bowling attack leader in the last 12 months after making a stellar comeback to international cricket. But earlier this year, he was out of action for a few months due to a shoulder injury. He picked up the back injury during a BCL match on November 20.

The first ODI will be held in Dhaka on Sunday followed by the second one at the same venue on December 7 and the final match on December 10 in Chattogram.