St Kitts: Bangladesh suffered the only defeat on their Caribbean tour, when West Indies won their Twenty20 international by five wickets on Sunday.
Bangladesh were unsuccessful in defending a modest victory target of 119, after reckless batting - epitomised by four needless run outs - undermined their batting at Warner Park.
The result was secured, when Travis Dowlin, whose run-a-ball 37 was the top score, pulled a long-hop from left-arm spinner Mehrab Hossain Jr for the last of his five fours.
Sunday's game followed two Tests and three one-day internationals between the two sides which ended in a historic sweep for Bangladesh of both series against a West Indies side depleted by a player boycott.
"We didn't bat well, especially the top-order batsmen, including myself, and we didn't play smart cricket, that was our downfall," said Bangladesh captain Shakib Al Hasan.
"I don't know why we played like this, but we didn't execute our game plan well. If you have four run-outs in an innings, it will be very difficult for you to score runs in a T20."
He added: "We have played very good cricket for the last month, and one bad game does not make us look bad. We are looking forward to our trip to Zimbabwe. It will be very important to us."
thatscricket with inputs from Agencies