Chasing a target of 170 runs for victory after securing a slender first-innings lead, West Indies reached their goal comfortably thanks to an unbeaten knock of 81 from opening batsman Brandon King. The result moves the visitors ahead in the series ahead of the second Test in Sylhet.

The fourth day began with Bangladesh in a precarious position at 79-6 in their second innings, struggling to build a competitive total on a slow turning track. Left-arm spinner Jomel Warrican struck early by removing Jaker Ali, who edged a delivery to Roston Chase at slip.

Nayeem Hasan mounted some resistance for the hosts with a fighting half-century, scoring 52 runs under immense pressure. However, the combination of Warrican and Chase proved too difficult to handle on the deteriorating surface as Bangladesh were eventually bowled out for 142.

Roston Chase was the standout performer with the ball for the touring side, claiming figures of 5-36 to record his fifth five-wicket haul in Test cricket. His clever variations bamboozled the lower order and ensured Bangladesh could not set a challenging target.

Left with a target of 170, West Indies openers John Campbell and Brandon King immediately took the attack to the home spinners, Mehidy Hasan Miraz and Taijul Islam. The pair raced past the 50-run mark quickly with a flurry of aggressive strokes.

Rain interrupted play intermittently throughout the afternoon session, but the weather failed to disrupt the concentration of the West Indian openers. Following each rain delay, Campbell and King returned to the crease and raised the scoring rate even higher.

Bangladesh had an opportunity to break the partnership in the 19th over when Najmul Hossain Shanto dropped Campbell, though the fielder injured his thumb in the process and had to leave the field. Shoriful Islam eventually provided a breakthrough by bowling Campbell for 49 with the total at 112.

Tagenarine Chanderpaul fell cheaply soon after, but Kavem Hodge joined King at the crease to steady the innings. Hodge provided solid support as King guided the team past the target with eight wickets in hand.

The defeat caused Bangladesh to slip one position in the ICC World Test Championship standings down to fifth place with a points percentage of 47.62. Meanwhile, India moved up to fourth position in the table with 51.52 points percentage.

The attention now turns to the second and final match of the Test series. Sylhet will host the second encounter between the two sides, which is scheduled to get underway on November 5.

The visitors established a slender first-innings deficit before reducing Bangladesh to 79-6 in their second innings, holding a fragile lead of 106 runs heading into the penultimate day of the contest.

Resuming their overnight first innings at 134-4, West Indies made steady progress through Tagenarine Chanderpaul and Justin Greaves after starting the morning session under overcast conditions in Mirpur.

Chanderpaul extended his overnight resistance to reach his third Test match half-century before falling for a well-crafted 56 runs, bringing an important partnership to a premature conclusion.

Greaves continued to anchor the middle order with a determined knock of 46 runs, frustrating the home attack during a productive morning session for the touring side.

West Indies captain Roston Chase played a crucial unbeaten knock of 43 runs, shepherding the tail-enders as the visitors accumulated a total of 245 runs in their first innings.

Despite the lower-order resistance, West Indies fell just 27 runs short of overhauling Bangladesh's first-innings total of 272 runs, leaving the match finely poised at the halfway stage.

Nayeem Hasan proved to be the standout bowler for the hosts, orchestrating the West Indian dismissal by claiming impressive figures of four wickets for 33 runs.

Armed with a narrow 27-run advantage, Bangladesh began their second innings hoping to extend their lead, but instead encountered a fierce spell of bowling from the visiting captain.

Chase struck a decisive blow in the space of two consecutive overs, removing first-innings centurion Shadman Islam for 13 to spark an immediate collapse in the batting order.

The West Indian skipper quickly accounted for Najmul Hossain Shanto for 10 and trapped Towhid Hridoy lbw for a duck, leaving the hosts tottering at 33-4.

Jomel Warrican compounded the misery for Bangladesh shortly afterwards by dismissing wicketkeeper-batter Litton Das, deepening the crisis for the home team's top order.

Mehidy Hasan Miraz attempted to launch a recovery, but Warrican struck with a delivery that squared up the all-rounder, reducing the scoreboard to 53-6.

Nayeem and Jaker Ali dug in with defiant unbeaten knocks of 18 runs apiece, offering late resistance as fading natural light forced umpires to call stumps early.

Bad light brought a premature end to proceedings with Bangladesh leading by 106 runs and only four second-innings wickets remaining in hand.

The ongoing series forms part of the ongoing ICC World Test Championship 2025-27 cycle, where every victory carries crucial points for the global standings.

Mirpur's Shere Bangla National Stadium has traditionally offered substantial assistance to slow bowlers as matches progress into the latter stages of red-ball fixtures.

Both teams will return to the field on Saturday morning for the fourth day, with West Indies aiming to polish off the tail and Bangladesh needing a substantial partnership.

The second and final Test of the current bilateral series is scheduled to get underway on 5 November at the regional venue in Sylhet.