The mother of missing RAF Serviceman Corrie McKeague says she "now knows" that her son is not in a Cambridgeshire landfill after Suffolk Police decided to end their latest search of the site.
Police restarted a search of the area at Milton back in October, but have still found no trace of him.
Mr McKeague was last seen on a night out in Bury St Edmunds in September 2016.
Officers were looking into the theory that he climbed into a bin and was taken away by a lorry to the site, but they will now focus on other lines on enquiry.
Following the announcement, Corrie's mother Nicola Urquhart said that she now accepts that police have done everything they can at the landfill.
Nicola Urquhart's full statement
Today sees the conclusion of the search of cell 22 at Milton landfill. From the first day that myself, Makeyan and Darroch stood in the horseshoe and saw the industrial bins, we have consistently asked for that line of enquiry (theory) to be investigated and ruled out.
In a separate statement, Corrie's father Martin McKeague thanked police for their "tireless" efforts.
"The McKeague family would like to extend its heartfelt appreciation and our lifelong debt of gratitude to the Norfolk and Suffolk police forces, the Major Investigation Team (MIT), the multitude of Police volunteers who worked tirelessly at the Milton landfill site, the Site Owners, the Jones Brothers Excavation team, the wonderful people of Suffolk and the surrounding areas for their support and efforts and everyone closer to home who have stoodup and stood by us, and allowed us to get through the darkest moments of this horrific event," he said.
"This family would have been lost without all of you and we have been humbled by your support and concern.
"This has been our sentiment from the beginning of this search and it will continue until the end."