Australia learned about Chinese live-fire naval drills off the country’s coast that forced dozens of flights to be diverted via an alert from a commercial pilot, authorities said on Monday.

A lawyer for Luigi Mangione, the man accused of fatally gunning down U.S. health insurance executive Brian Thompson in December, told a judge Friday that her client was illegally searched during his arrest and she would seek to exclude that evidence from his trial on state murder and terrorism charges.

Dozens of commercial flights had to change course last week when they were surprised by Chinese naval drills off the coast of Australia. But China said its navy repeatedly issued notices.

New Zealand raised fresh concerns Monday over nearby live-fire drills conducted by Chinese warships armed with “extremely capable” weapons, an unprecedented show of firepower last week that analysts say are part of Beijing’s ongoing plan to build a blue-water navy with global reach.

Leaders in Australia and New Zealand say China should have given them more warning before its navy conducted an unusual series of live fire exercises in the seas between the two countries, forcing flights to divert on short notice.