Officers were called at about 12.40pm on Sunday to reports of violence in Houghton Road and on arrival found two people were injured.
Mr Hasler of Houghton Road in St Ives, was fatally injured. A 27-year-old woman from Huntingdon suffered serious injuries and was taken to Addenbrooke's Hospital in Cambridge for treatment. She was released yesterday.
A 40-year-old man from Cambridge has been arrested on suspicion of murder and attempted murder and was transferred from hospital to Parkside Police Station in Cambridge for questioning last night.
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 The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.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