Police say missing Danuta Domagalska 'not in Poland'
A Polish farm worker missing for 11 days is "unlikely" to have gone back to her homeland, police said.
Danuta Domagalska, 27, who worked at New Moor Farm, near Walworth on the outskirts of Darlington, has not been seen since 6 August.
Police are also searching for her brother Piotr Lawniczak, 31.
Mrs Domagalska's husband Marcin has been interviewed by police but is not being treated as a suspect.
Mrs Domagalska was living in a cottage next to the farm with her husband and her brother.
Police have released footage taken of her working in the farm's milking parlour as part of a promotional video.
When Mrs Domagalska, who has a five-year-old son Kuba, failed to turn up for work, farm bosses were unhappy with Mr Lawniczak's explanation and called police.
He had left the property before officers could speak to him.
Police described the missing woman as a "hard-working and friendly employee" at the farm which operates an ice cream business.
Police believe Mr Lawniczak, who is from a village near Kalisz, north west of Sieradz in the Lodz area of Poland, is in the UK.
Det Supt Adrian Green, leading the investigation, said: "We are having ponds and slurry pits pumped out.
"This is obviously causing huge disruption to the dairy business and I am grateful for the understanding and support of (the owners) Mr and Mrs Archer who have given us since the weekend."