Polic are growing increasingly concerned for 60-year-old Robert Bidski who has been missing since Monday evening.
Robert Bidski, 60, was reported missing by his family on Monday, 10th October at around 9pm.
He was last seen in the Chickenley area of Dewsbury after visiting for the weekend. Mr Bidski's car was found on Denby Dale Road, near to the Bretton roundabout.
Searches have also been conducted in Hampshire, where Mr Bidski lives.
Earlier this week, officers released CCTV images of Robert shortly before he went missing. He is described as a white man, 5ft 10 tall of a slim build with grey hair and a goatee beard. When he was last seen, he was wearing a grey wool jacket which was waist length, blue faded jeans and grey shoes.
Police are continuing to carry out an extensive search including officers on the ground, the police helicopter and dog support units. Specialist underwater search teams are also searching key locations off Denby Dale Road. Partners from the West Yorkshire Fire and Rescue Service and Holme Valley Mountain Rescue have also been involved in the search.
Detective Sergeant Peter Usher of Kirklees CID said; "We are growing gravely concerned for Robert and continue to appeal for anyone who has seen him since late Monday evening, or who may have any information as to his whereabouts to come forward as a matter of urgency."
Robert's Family said: "Every family member is concerned for his safety, if anyone as any information please don't hesitate to contact the police. Robert, if you are reading, or see this, please get in contact."
Anyone with any information as to Robert's whereabouts is asked to contact police via 101 quoting 1665 of October 10.