The search of a landfill site by police looking for missing airman Corrie McKeague is set to be extended.
Suffolk Police resumed their trawl of the Milton site in Cambridgeshire on October 23, focusing on an area known as "cell 22".
It was due to last between four and six weeks but, at the end of the fifth week, police have confirmed it will continue for a few more weeks.
A spokesman said the search was "going well".
"It is recognised that whilst the designated search area remains the same, timescales are not set in stone and subject to many variables.
"It is currently anticipated that the search may progress through to early-mid December. We continue to engage with the family to keep them fully informed.”
Mr McKeague disappeared on a night out in Bury St Edmunds in September 2016. He was based at RAF Honington.
Police fear he may have climbed into a bin in the Horseshoe area of the town which was later collected and the waste taken to Milton.
Suffolk Police said Corrie's disappearance will now be treated as a cold case as police say there are no "realistic lines of enquiry left".
Suffolk Police said Corrie's disappearance will now be treated as a cold case as there are no "realistic lines of enquiry left to pursue".
Suffolk Police are passing the investigation into the missing airman Corrie McKeague onto a cold case team.