World number three Rory McIlroy remained in the hunt to win his first title since the U.S. Open triumph in June as he took a share of the five-way lead at the halfway stage of the Korea Open on Friday.

The mop-haired Northern Irishman was tied for a three-shot lead with Korea's defending champion Y.E. Yang, his compatriot Mo Joong-kyung, Australia's Bronson La'Cassie and American Rickie Fowler after the second round.

McIlroy, who finished third at the tournament in 2009, followed up his opening round 68 with a two-under 69 at the Woo Jeong Hills Country Club.

McIlroy, who followed back-to-back third-place finishes at the European Masters and Dutch Open with a runner-up spot at last week's Dunhill Links Championship, believes he is well poised to end the wait.

It was a good round. I felt it could have been lower, but I played solid golf and holed some nice putts, the 22-year old said after hitting five birdies and three bogeys in the day.

It's a good start to the tournament and I have put myself in a good position going into the weekend.

Korean Mo set the course on fire with five birdies and an eagle for a five-under 66 that gave him a share of the overnight lead at a two-day total of 137.

I've been hitting the ball well lately and the putter came round this week, so I am pretty comfortable with my game, Mo said. I've been having a pretty good year and winning a Korea Open is every Korean's dream. It would be nice, but there are two days to go.

Yang, the first Asian born man to win a major at the 2009 U.S. PGA Championship, carded a round of one-under 70 to remain in the hunt for a third Korea Open title.

In the morning it was very cold, so on the front nine I did not play well and I was not able to record a lot of birdies, he told reporters.

But on the back nine I felt better, although I regret not being able to score better.

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