China, one of the five major states possessing nuclear weapons, is thinking of joining U.N. talks on a treaty outlawing nuclear arms starting late March in New York, diplomatic sources said Wednesday.

China has heard the views of countries promoting the treaty such as Austria and Mexico in a meeting earlier this month ahead of the start of negotiations at the U.N. headquarters, the sources said.

A senior official of the Chinese Foreign Ministry who was at a disarmament-related international meeting in Mexico City admitted Wednesday that China is considering joining the talks but said a final decision has yet to be made.