A murky picture has emerged over China’s live-fire drills. Who knew what when?

Here's what we know about how Australia learned about Chinese navy exercises held in the Tasman Sea over two days

• Get our breaking news email, free app or daily news podcast

In the five days since Chinese navy ships held live-fire drills in the Tasman Sea between Australia and New Zealand, an unclear picture has emerged of who knew what - and when.

Australian Senate estimates heard the first knowledge Australian authorities had of the potentially dangerous live-fire activity was through a civilian pilot flying a commercial flight over the area. The Australian prime minister, Anthony Albanese, has said the New Zealand navy notified Australia at about the same time" as the pilot notified Airservices Australia.

Sign up for Guardian Australia's breaking news email