On Friday night, a man in his sixties was found dead in his home in Haninge south of Stockholm.
The circumstances surrounding the killing remain unclear, but the man’s wife has been detained on suspicion of murder.
“At present, we can’t rule out that it was a crime,” police spokesperson Christer Holmer told the TT news agency.
“On Monday, an autopsy will be performed on the body.”
Meanwhile, a 44-year-old woman was found dead in her home in Hässelby in northwest Stockholm on Saturday.
“A man has been detained on suspicion of murder,” police spokesperson Helena Appelgren told TT.
The woman was found around 7pm on Saturday evening and police are releasing few details about the case.
However, a police spokesperson confirmed to newspaper Metro that the two were living together in the flat.
A forensic analysis of the woman’s apartment has been conducted and on Sunday an autopsy was planned, as was an interrogation of the 46-year-old man being held by police.
In addition, a man was found dead outside a building on the island of Lidningö, east of Stockholm, at 3am on Sunday morning, Metro reported.
A man and a woman were arrested at the scene of the suspected crime and have been detained on suspicion of murder.