Philippine Foreign Affairs Secretary Alan Peter S. Cayetano, in Seoul for an official visit Sunday, said his country is “gravely concerned” about the detonation and added, “Such provocative actions undermine regional peace and stability.”

Cayetano says the Association of Southeast Asian Nations is ready to help in any effort to ease the tensions through dialogue.

The Indian Ministry of External Affairs issued a statement deploring Sunday’s blast. It says the North “once again acted in violation of its international commitments.”

Pakistan’s condemnation of the test also urged all sides “to display utmost restraint and return toward the path of peaceful negotiated settlement of the issue.”