Leg-spinner Devendra Bishoo grabbed 5-90 as the West Indies trounced Bangladesh by 229 runs in the second Test in Dhaka on Wednesday to win their first away series in eight years.

Bangladesh, who were set an improbable victory target of 508 runs, were shot out for 278 soon after lunch on the fifth day at the Sher-e-Bangla stadium. Bishoo, the Guyanese bowler who turns 26 on Sunday, returned with career-best figures in only his seventh Test and skipper Darren Sammy chipped in with 2-19 to rout the hosts.

The emphatic win after the drawn first match in Chittagong will provide a massive morale-booster for Sammy's men, who begin a three-Test series in India on Sunday. It was the first series win away from home for the West Indies since November 2003, when they beat Zimbabwe 1-0. Their last Test win abroad was against South Africa in Port Elizabeth in December, 2007.