A search for a possible vessel in distress was launched off the coast of Port Kennedy.
The Joint Rescue Coordination Centre in Canberra notified WA Police that an unregistered EPIRB had been activated around 8.05am on Monday.
Water Police and the RAC rescue helicopter were deployed.
It was later determined a vessel had accidentally activated its EPIRB.
Last call for donations to support Mandurah's homeless
Coast FM and The Wave have once again teamed up with WestAus Crisis and Welfare Services for their annual Winter Appeal supporting Homelessness Awareness Week.
State Government commits to building $5 million electrical training facility at Rockingham TAFE
The State Government has committed to building a $5 million electrical training facility at South Metropolitan TAFE's Rockingham campus.
McDonald's approved for Dawesville
A McDonald's is coming to Dawesville despite the City of Mandurah urging state planners to reject the proposal.
Wanted man known to frequent Kwinana, Mandurah and Rockingham areas
Kwinana Police are asking for the public's help to locate a 27-year-old man who is wanted for questioning over an ongoing investigation.
Mandurah woman completes grueling English Channel swim
A Mandurah woman has successfully swum the English Channel.
Man and child seriously injured in South West crash
A 28-year-old man and a seven-year-old child have suffered serious injuries following a crash in Australind.
Motorists warned to expect delays during Kwinana Freeway upgrades
Major upgrades to the Kwinana Freeway between Roe Highway and Safety Bay Road are another step closer but motorists have been warned to expect two years of delays during construction.
Driver injured in Serpentine crash
A driver has suffered serious injuries in a crash in Serpentine.
Man and woman wanted for questioning over Lakelands car theft
Police are looking for a man and woman who allegedly stole a car from Lakelands Shopping Centre.