The Clara man scored five birdies and two eagles during his second round.
Shane Lowry has finished his second round at the DP World Tour Championship in Dubai with a 67.
The Offaly golfer hit five birdies and one eagle, but hit two bogeys including one on the eighteenth.
Thriston Lawrence of South Africa is the leader on eight-under-par.
Tom McKibbin is four-under, with Rory McIlroy finishing with a one-under round of 71.