Merseyside Police are growing concerned about the wellbeing of Peter Kerevan, 76, last seen at around 8.30am on Monday July 29 at his home address.
Peter is described as white, around 6ft tall, of slim build with short grey hair.
He was last seen wearing a grey and blue jumper, blue jeans and brown shoes.
Police have received a number of reported sightings of Peter and are encouraging anyone else who may have seen him to contact officers
These CCTV images were captured that morning and show Peter on Wango Lane, Liverpool.
Anyone with information who think they may have seen Peter or someone who resembles his description should call 101, DM @MerPolCC or in an emergency, call 999.