Police have released CCTV footage as the search for an 81-year-old grandfather from Dewsbury continues.
Colin Vasey disappeared four days ago, and despite volunteers and police scouring the area near his home, no trace of him has been found.
The CCTV, which is believed to show Colin, was taken at 5.30am on Sunday morning in the Owl Road, Shaw Cross, Dewsbury area.
Police are urging anyone with any information to come forward.
We desperately need to find Colin and reunite him with his family. There is an extensive search operation in place and I am again appealing directly to anyone who sees Colin or thinks they might have seen him to get in contact