Hoax broadcasts

Hoax broadcasts made to passenger planes in Melbourne

The illegal broadcasts were made over several weeks at Melbourne's main Tullamarine and Avalon airports, the Australian Federal Police (AFP) said.

Local media reported a portable radio may have been used to interfere with air traffic control.

The incidents did not pose a continuing threat to safety, the AFP said.

ABC News reported that a Virgin Australia plane changed altitude before aborting its landing after receiving instructions from a mystery person on 27 October.