Australia's defense forces, joined by New Zealand, have been monitoring Chinese navy vessels since they were spotted last week.

Airliners were over the Tasman Sea crossing between Australia and New Zealand when the Chinese navy warned they were flying over a secret live-fire exercise, Australian Defense Minister Richard Marles said on Friday.

China’s Defence Ministry said Australia made “unreasonable accusations” and deliberately hyped the situation after three planes headed to New Zealand

By Kirsty Needham, Lucy Craymer and Lisa Barrington SYDNEY/WELLINGTON (Reuters) -Australia expressed concern to China on Friday over the short notice given by the Chinese navy that it would hold a live-fire exercise in international waters between Australia and New Zealand,

China conducted naval drills between Australia and New Zealand over two days. Beijing said it is "deeply surprised and strongly dissatisfied" with Australia's remarks which it said were "inconsistent with facts.

Australia said Saturday it has not received a satisfactory explanation from Beijing after Chinese warships off its east coast broadcast a "disconcerting" live-fire warning that forced commercial flights to change course.

China defence ministry spokesperson Wu Qian said on Sunday that Australian complaints over recent Chinese live-fire naval drills in international waters between Australia and New Zealand were "hyped up" and "inconsistent with the facts".

New Zealand said the Chinese navy conducted a live-fire exercise in international waters near the Pacific nation on Saturday, a day after it held a similar drill between Australia and New Zealand that forced airlines to divert flights.

Australia's defense forces, joined by New Zealand, have been monitoring Chinese navy vessels since they were spotted last week.

Australia accused China on Saturday of failing to give satisfactory reasons for what it called inadequate notice of a live-fire drill in waters between Australia and New Zealand that forced airlines to divert flights.