Leona Maguire shot a six-under-par 66 on day two of the Honda LPGA Thailand tournament.
Maguire moves to eight under par after her bogey free round, eight shots off the joint lead of Nasa Hataoka and Su Oh.
Maguire shot birdies at four, five, seven, nine, 10 and 15 to move to eight under par for the tournament.
Nasa Hataoka shot a seven-under-par 65 to move to -16, as did Su Oh who have a one shot lead on Celine Boutier and Nanna Koerstz Madsen.
Cavan woman Maguire will tee-off her third round at 9:06 local time, 2:06am Irish time from joint 22nd place.