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.

Airlines have been contacted by Australia’s air traffic control agency warning them of reports of live fire off the country’s east coast where a Chinese navy task group has been operating, the agency and Australian officials said.

Commercial airliners flying over the Tasman Sea between Australia and New Zealand were forced to reroute their flights on Friday morning Australian time because of a People’s Liberation Army Navy (PLAN) action group warning that it would conduct live-fire drills.