Merseyside Police say they are concerned about a 23-year-old man who has been missing from home since Sunday.
Ian Virtue was last seen by his grandmother at their home at about 10.30pm on Haven Road, Aintree.
Police have been going house-to-house and checking CCTV to try and find Ian.
Ian is described as white, about 5ft 5in tall, of a thin build with short cropped hair. He was last seen wearing a black and grey Berghaus coat, black combat trousers with navy Adidas trainers.
Ian is known to frequent parks and wooded areas in the Croxteth and wider Liverpool area.
Officers would urge Ian, or anyone who knows of his whereabouts, to contact Merseyside Police on the 101 number or the Missing Persons helpline on 116000.