Inter-Korean talks were extended by one more day as the two Koreas failed to issue a joint statement late Tuesday.

The two sides convened at the North's border city of Gaesong early Wednesday morning and decided to hold more talks on Thursday.

It is the second time in as many days for the talks to be extended, as they were originally scheduled to conclude on Tuesday afternoon.

Since Monday, the two Koreas have been trying to hammer out differences on major issues of concern, including the North's nuclear issue.

Pyongyang is resisting Seoul's proposal to include an article in the joint statement on the North's nuclear arms standoff that would address global concerns over the atomic impasse and reiterate support for a de-nuclearized Korean Peninsula.

Meanwhile, the South has called for the inclusion of a detailed agenda for envisaged ministerial talks in the joint statement. However, the North has counter-proposed holding negotiations at an early date to discuss preparations for such a Cabinet-level meeting.

The two sides have also failed thus far to narrow differences over fertilizer aid to the North. Pyongyang has requested 500-thousand tons of fertilizer in one delivery, but the South wants to initially provide 200-thousand tons and then discuss the delivery of the remainder of the aid during ministerial talks.