Emergency services are responding to reports of a suspected shark attack at Sorrento beach north of Perth.
St John WA received reports of the suspected attack at 10:15am local time and have confirmed three crews have been sent to the scene, including one on priority.
WA Police said Water Police are also attending in response to a report of "a swimmer in distress".
Earlier, a member of the public reported seeing a 2.5 metre-long shark off the beach.
The suspected attack comes just a week after Surf Lifesaving WA's helicopter shark patrols began for the summer season.
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