Police are seeking the public's help into a fatal boating accident off Bunbury.
Four people were onboard a vessel off The Cut when it was struck by a wave, causing it to flip upside down around 1pm on October 3.
"A coordinated rescue involving Water Police, local volunteer Marine Rescue crews, and the RAC Rescue Helicopter commenced," a WA Police spokesperson said.
A male teenager suffered critical injuries and was taken to Bunbury Regional Hospital where he later died.
Three adults, one man and two women, were located safe and uninjured.
Anyone with CCTV, dash-camera or mobile phone vision, which may assist investigators can upload it via this link: https://wapf.au.evidence.com/.../comm.../public/marinerescue
Bunbury Police will prepare a report for the Coroner.
Wanted woman known to frequent Mandurah, Rockingham, West Pinjarra areas
Waikiki Beach Hotel to go ahead after liquor licence approved
Man found critically injured outside Baldivis pub
Dawesville man charged with 38 child sex offences
Mandurah land owners reminded to prepare properties for upcoming fire season
Winning $2.5 million Lotto ticket sold in Bertram
Shark advice issued for White Hills Beach
Mayor reassures community after 13 trees removed from old King Carnival site
State Government invests $5 million to help restore Peel-Harvey Estuary