Human remains have been found as part of an investigation into the disappearance of a Polish woman 15 years ago.
Izabela Zablocka was living in the Normanton area of Derby but lost contact with her family in August 2010, when she was 30, and has never been found.
However, new information came to light last week and a murder investigation was launched.
Derbyshire Police said remains believed to belong to Ms Zablocka had now been discovered in the garden of a property on Princes Street in Normanton.
A 39-year-old woman who was arrested on suspicion of murder was re-arrested on Monday.
Two other women, aged 39 and 43, and a 41-year-old man arrested last week remain on bail.
Detective Inspector Kane Martin said formal identification hadn’t yet taken place but it’s believed the remains belong to Ms Zablocka.
“As such, we have spoken with Izabela’s family in Poland, and they are aware. Our thoughts are with them at this extremely difficult time,” he said.
“Identification of the remains is likely to be a lengthy process, but we will issue updates when we are able.”
Police will remain at the address for now as they try to gather more evidence on Ms Zablocka’s death.
A £20,000 reward is being offered until 27 August for information that leads to a conviction. Anyone who wants to get in touch is urged to contact the Crimestoppers charity.
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DI Martin added: “We know that someone out there will have information about Izabela that may help us understand what happened to her, and urge anyone who saw, spoke to, or heard anything about Izabela in July or August 2010 to come forward.
“You may hold the key piece of information that we need to understand the full circumstances of Izabela’s disappearance, and to give her family answers on what happened to their loved one.”
