Lahiri, who carded 65 on first day, added a five-under-par 67 after the second round. The five-time Asian Tour winner compiled a two-day total of 12-under-par 132 to extend his morning advantage over Australia's Andrew Dodt by two shots at the Singha Park Khon Kaen Golf Club.

Chowrasia, who also carded 65 on first day, managed only 71 with just one birdie and no other birdies or bogeys.

Chowrasia, winner of the Panasonic Open 2014, slipped to tied fifth, but can take solace from the fact that he has dropped just one bogey in 36 holes. He had eight birdies and one bogey on day one and he had just one birdie on second day.

Lahiri had seven birdies, the same as first day, but he also had two bogeys on the second.

Promising Indian youngster S Chikkarangappa, who sees Lahiri as his mentor, shot 68 to move into top-10 in 10th
place at seven-under.

Arjun Atwal, 72 on first day, added a 67 today to be five-under and tied 26th, while Rashid Khan, two-time winner this year, carded 69 to move to four-under after 36 holes and is now tied 36th. Of the other Indians Rahil Gangjee (71-71) was tied 64th, Chiragh (72-75) was 103rd and Himmat (75-74) was 127th.

Lahiri continued to assert himself with another round that could edge him closer to his third win in the region's premier Tour this year.

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