Harshitha hits unbeaten 69 to steer Sri Lanka to target
Akter, 18, takes three wickets for no runs in powerplay (SL 25-3)
Bangladesh collapse from 71-2 to 126-8
Ranasinghe takes three wickets for Sri Lanka
Nilakshi de Silva cuts the ball away through point but it is fielded on the boundary and Sri Lanka can only run two - the first runs Marufa Akter has conceded from her two overs so far.
What a moment for the teenager and what a moment for Bangladesh. They are right on top now.
Boo! Nilakshi de Silva sees off the hat-trick ball. De Silva thinks about a quick single but is wisely sent back.
Hat-trick ball coming up.
Here we go....
Daniel Norcross
BBC Test Match Special
Image source, Getty ImagesShe is yet to concede a run and is on a hat-trick ball.
Sanjeewani b Akter 0 (SL 25-3)
Bowled her!! Marufa Akter is on a hat-trick!
It is a brilliant delivery that beats Anushka Sanjeewani all ends up and sends the bails flying and wickets scattering.
Daniel Norcross
BBC Test Match Special
Fireworks everywhere! Unbelievable.
Georgia Elwiss
England all-rounder on BBC Test Match Special
What an introduction! The youngster is having the time of her life. For Marufa senior cricket is easy.
Daniel Norcross
BBC Test Match Special
Now Sri Lanka are in real bother!
Vishmi c&b Akter 1 (SL 25-2)
Marufa Akter strikes again - and it is the key wicket of Vishmi Gunaratne, who mistimes her drive and loops the ball up for a simple caught and bowled!
Georgia Elwiss
England all-rounder on BBC Test Match Special
Image source, Getty ImagesIt's posed nicely at the moment. Can't help but feel the introduction of Marufa has changed the momentum in the game.
That will make Harshitha Madavi feel better. She has struggled to middle the ball so far but catches a reverse-sweep sweetly and clatters Salma Khatun away for four.
There looks to be a stiff breeze blowing across Newlands, the flags at the stadium are getting a bit of a buffeting.
Georgia Elwiss
England all-rounder on BBC Test Match Special
Marufa looked really threatening. She's not conceded any runs and got a wicket. She'll have at least three more overs to bowl and if they're anything like that we're in for a good game.
Henry Moeran
BBC Test Match Special commentator
Marufa has a huge smile on her face. A wicket maiden on her World Cup debut.
What an over that was from Marufa Akter, a wicket maiden.
Henry Moeran
BBC Test Match Special commentator
The 18-year-old strikes! Bangladesh's leading wicket taker in the Under-19s strikes and gets the big wicket on the senior stage.
Atapattu c Lata b Marufa 15 (SL 17-1)
Chamari Atapattu goes!
Marufa Akter has bowled really well so far. She angles two balls across the left-handed Atapattu. The next ball is straighter and Atapattu lofts up to mid-on.
A huge wicket for Bangladesh!
Henry Moeran
BBC Test Match Special commentator
Image source, Getty ImagesThat's a hostile ball from Jahanara Alam.
Ooh, that is spicy from Jahanara Alam.
She gets one to leap up off the pitch and Harshitha Madavi has to take evasive action to let it fizz past and through to the wicketkeeper.
Harshitha did well to get out of the way of that.
Georgia Elwiss
England all-rounder on BBC Test Match Special
It's a freebie for Atapattu. Short, wide and job done.
Henry Moeran
BBC Test Match Special commentator
That's a good shot!