Bangladesh suffered a top-order collapse, falling to 71 for three in the first 18 overs against New Zealand in the deciding third ODI in Chattogram.
New Zealand won the toss and elected to field first. The three-match series is currently tied at 1-1, with the visitors winning the opener and Bangladesh securing a six-wicket victory in the second match in Dhaka.
Fast bowler Will O'Rourke dominated the opening powerplay, claiming all three wickets to dismantle the host nation's top order.
He struck on his second delivery of the match, finding the outside edge of opener Saif Hassan for a scoreless duck, with wicketkeeper Tom Latham completing the catch.
O'Rourke then dismissed Tanzid Hasan for one run. Hasan attempted to fend away a back-of-a-length delivery but dragged an inside edge onto his own stumps.
Soumya Sarkar, who provided early resistance with 18 runs from 26 deliveries, suffered a similar fate in the ninth over. Attempting a late cut against O'Rourke, Sarkar chopped the ball onto his stumps to leave Bangladesh in deep trouble at 32 for three.
At the end of the 18-over mark, Najmul Hossain Shanto was unbeaten on 28, and Litton Das was batting on 19.