A top U.S. diplomat on North Korea says the door remains open for Pyongyang to return to denuclearization talks.

That's according to South Korea's Foreign Minister Kang Kyung-wha after she met with U.S. Special Representative for North Korea Stephen Biegun in Seoul on Friday.

The remarks come a day after North Korea fired two short-range missiles, which some in the U.S. are reportedly describing as ballistic missiles.

If confirmed, it would mark a violation of UN Security Council resolutions that prohibit such launches.

During their meeting, Kang raised concerns that Pyongyang's latest missile activity could hampers efforts to improve inter-Korean relations and diffuse military tensions on the Korean Peninsula, stressing the need for three-way dialogue between the two Koreas and the United States.