Two men have been arrested over the unsolved death of a man eight years ago.
Father-of-five Jan Hogan's body was found in his flat in Basil Drive, Downham Market, on May 23, 2010.
Detectives from the Major Investigation Team (MIT) carried out an investigation into his case at the time.
It began with a full forensic examination of 59-year-old Mr Hogan's flat on the outskirts of Downham, along with a search of neighbouring properties and house-to-house enquiries around the estate.
A post mortem into his death was inconclusive. Tests were carried out for the presence of poison, it was reported at the time. An inquest into his death the following year recorded an open verdict. The coroner said he did not kill himself or die from natural causes.
Last year Mr Hogan's family joined officers in renewing their appeal for witnesses in relation to the circumstances surrounding their father's death.
They said: As each year passes, it doesn't get any easier for us and now, seven years on, we are still without answers as to how or why he died.
'A father, brother, grandfather and a great grandfather to a grandchild he never got to meet. We would not wish the distress and grief we have suffered as a family on anyone and it continues to go on without closure.'
Det Insp Stuart Chapman, from the Norfolk and Suffolk MIT, confirming that there were further lines of enquiries being progressed.
Today, continuing his appeal from last year, Det Insp Chapman said: 'While our investigation into the circumstances of Jan Hogan's death has led to two arrests, we would still like to hear from anyone who may have information regarding it, even if you have spoken to us before.'
The men, one in his 40s from the King's Lynn area and one in his 50s from the Downham Market area, have been taken to Wymondham Police Investigation Centre where they remain in custody and will be questioned in due course.
Anyone with information concerning the case should contact the Norfolk and Suffolk Major Investigation Team on 101.
Alternatively, information can be updated directly to the major investigation public portal via the following link: https://mipp.police.uk/.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here