Two people were stabbed and killed at an Ikea store in Vasteras, Sweden on Monday, officials announced, adding that two of the suspects of the attack were arrested.
One of the suspects was first thought to be an injured victim, Vasteras police chief Per Agren, said in a press statement.
"Two men have been arrested... One is born in 1992 and the other is the third injured person, born in 1979," Agren added.
The two victims, a man and a women, died due to the knife injuries after the attack.
"This is a crazy incident that has happened, we don't know the reason for it,” the police chief told reporters, adding they did not see any connection between the attackers and the victims.
Agren said the injured suspect was apprehended in the store and underwent surgery after taken to a local hospital.
Police searched the area six hours after the attack before announcing they believed they had found the weapons that were used during the attack, without giving further details.
Information about the identities of the victims were not given as authorities were in the process of informing their next of kin.
Police later boosted security at other shopping centres in the area after the attack.