Emergency response teams were called to Rottnest Island this morning after the Army Jetty partly collapsed with several people fishing at the time.
One person with their foot trapped was rescued by onlookers, while two others made it to shore safely.
WA Today has reported a woman and girl are being airlifted to hospital after sustaining multiple injuries.
It’s believed an unconfirmed fourth person is also being treated at the island’s nursing post.
Police are now investigating the incident, with the extent of injuries currently unknown.
Stay tuned for more updates.