Police have released a detailed map of the search area.
A full size map is available to download at the bottom of the page.
The area within the blue circle, shows the initial search area and the area within the green circle shows the second search area.
The subsequent areas marked in red are search areas that have been developed as a result of intelligence that has been gathered.
The blue dot indicates the spot where Adrian was dropped off by a taxi at about midnight on Friday December 4th.
The green dot is the location that police believe Adrian was last seen.
Block number 7 shows the area where the majority of house to house enquiries have taken place.
