Merseyside Police is becoming increasingly concerned about the welfare of a 59-year-old man from the Sefton who has been missing since 14 December.
Extensive inquiries continue to be carried out by officers to trace Mr Whitehurst, who is still missing from home.
Derek Jones was last seen around 11 pm on Thursday, 8 January in the Leesowe area.
Lancashire Police are appealing for information about a 27-year-old man missing from home in Blackpool.
Lancashire police are appealing for information to trace a girl who has gone missing from home.