Hamas supporters allegedly hacked speakers to broadcast radical messages at Harrisburg International Airport.

Footage shows unauthorised audio clips - including chants of 'Free Palestine!' - echoing through the terminal on Tuesday, leaving passengers stunned in Pennsylvania.

The messages also contained insults directed at Israeli Prime Minister Benjamin Netanyahu and US President Donald Trump.

A separate voiceover declared: 'Turkish hacker Cyber Islam was here.'

Similar incidents were reported at Kelowna International Airport and Victoria International Airport in British Columbia, as well as Windsor International Airport in Ontario.

Officials said the hackers targeted the public address system and flight information boards, causing a brief disruption that startled travellers but did not affect flight operations.

No group has officially claimed responsibility.