Police have confirmed that remains found at a house in Ellesmere Port are human.
The remains were discovered in an outbuilding of the address in Hylton Court on Wednesday.
A post mortem examination took place last night and revealed cause of death to be blunt force trauma.
Police believe the remains belong to a missing French man, Christophe Borgye, who was reported missing in May 2009.
A 34-year-old man is being questioned in connection with the death, while a 35-year-old man who was arrested after he contacted police has since been sectioned under the Mental Health Act.
– Detective chief inspector Simon Price said
"Incidents like this are thankfully rare, especially in Cheshire, and I appreciate that the public may be concerned about the police activity in the area. I want to reassure them that this is a contained incident. We have arrested two men and have a team of officers working on the case.
"Formal identification is going to take some time but based on the information we have at this time we believe the victim is Christophe who was known to the man in custody.
"If anyone has any information that may assist us in our investigation I would urge them to contact us."
Anyone with any information should call police on 101 quoting incident number 932 of May 13 or alternatively contact Crimestoppers anonymously on 0800 555 111.