Police are appealing for public assistance to locate a Bringelly man missing for the past four days.
His family, along with police, hold serious concerns for his welfare.
Mark Browning, aged 39, was last seen at his home on Carrington Road last Friday, February 17.
He has not been seen since then.
Police were first notified the following day, on Saturday February 18.
Officers from the Camden Local Area Command, with assistance from PolAir, police trailbikes, the Mounted Unit and SES are involved in the search for him.
He is described as being of Caucasian appearance, and of medium build, approximately 180cm tall, with brown hair, a brown beard and moustache.
He has hazel eyes and a full sleeve tattoo on his left arm.
He also has tattoos on his right upper arm, his back and both sides of his chest.
He was last seen wearing a black singlet, shorts, no shoes and a silver necklace.
Police are urging anyone with information on Mark’s whereabouts to contact Triple Zero (000) or Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page here.
Information you provide will be treated in the strictest of confidence.
Police remind the public they should not report crime information via police Facebook and Twitter pages.