Bangladesh completed a fine run chase to upset a weakened England in the opening T20I as Najmul Hossain Shanto's half-century helped the hosts to a six-wicket victory.

Without a host of big names in Chattogram, including Ben Stokes and Harry Brook, the world champions toiled in the second half of their innings and made only 156-6.

England then failed to make sufficient headway with the ball as the hosts kicked off the three-match series with a surprise win.

The tourists initially looked set for a routine victory following an impressive opening stand of 80 from Phil Salt (38) and captain Jos Buttler (67), but they stuttered thereafter.

Mustafizur Rahman's fierce 16th-over delivery to remove Ben Duckett (20) was the catalyst for Bangladesh's assault, with Shanto clinging onto Buttler's leg-side drive from the very next ball.

Having provided the delivery which accounted for Buttler, Hasan Mahmud also sent Sam Curran packing as England's rate continued to slow.

Bangladesh recovered from the early losses of Rony Talukdar (21) and Litton Das (12) after taking up the bat, with Shanto's knock of 51 supported by Towhid Hridoy (24) and skipper Shakib Al Hasan (34no).

Even Mark Wood sending stumps flying to end Shanto's stay did nothing to slow Bangladesh's progress, as Shakib finished off a clinical chase by finding the boundary with 12 balls remaining.

Significant scalp for Bangladesh

Bangladesh entered Thursday's contest having lost seven of their last nine T20Is, with World Cup triumphs over Zimbabwe and the Netherlands their only wins in that run.

However, after winning the third and final ODI against England on Monday, they carried that form into the shorter format to turn the world champions over in comfortable fashion at the Zahur Ahmed Chowdhury Stadium.

Shanto leads the way

While the experience of Shakib helped Bangladesh over the line, Shanto's excellent knock set them on their way to a textbook chase.

Shanto's half-century was his third in T20Is, following knocks of 71 against Zimbabwe and 54 against Pakistan at the World Cup last year.