Serious welfare concerns are held for a missing Bunbury FIFO worker who has not been seen in over four days.
William Patrick Carter, who goes by the name Bill, was dropped at Perth Airport's Terminal 3 around 12.40pm on Saturday, December 6.
The 25-year-old was due to fly his job near Karratha but never boarded his flight.
Bill is described as being about 174cm tall, of slim build, with brown hair and blue eyes.
Anyone with information on his whereabouts is urged to contact police immediately on 131 444.
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