Police investigating the disappearance of missing RAF serviceman Corrie McKeague say they will continue searching a landfill site in Cambridgeshire for at least another three weeks.
The 23-year-old vanished following a night out in Bury St Edmunds in September.
Officers have spent the last 10 and a half weeks sifting through more than 3,500 tonnes of waste at the site in Milton, but haven't found any trace of the airman.
However, they say they have have discovered rubbish from Bury St Edmunds that dates back to the same time Corrie went missing.
As this type of search is so unusual, it was not known how the waste would have moved and as the work has progressed officers have gained a greater understanding of both how the waste is deposited and spread out, and the nature and construction of the site. Officers continue to take all of this into account as the search continues.
The work is under constant review and now, in week 11, in view of the dates on items still being found and advice from officers on the ground and the site team, it is likely the search will continue for at least three further weeks to ensure that the area holding waste from the relevant period is comprehensively examined.
The 23-year-old, who was based at RAF Honington, disappeared on a night out in Bury St Edmunds in September 2016.
The mother of missing Corrie McKeague says it's "back to the beginning" after a search for her son in a landfill site drew a blank.
Police have recently finished searching a landfill site for his body and say they are 'content' Corrie is not there.