A hand grenade was found outdoors in Tullinge south of Stockholm at lunchtime on Sunday.
It has been defused by the national bomb squad, says the police's press spokesperson Per Fahlström to TT at 18:00.
The hand grenade was found at a residence, writes Aftonbladet. The police do not want to confirm the information.
I can only say that it was lying outdoors in a villa area, says Per Fahlström.
The police have reduced the cordons that were set up in the area. A technical investigation will be conducted at the crime scene.
The incident is being investigated as an attempt at general endangerment and serious crime against the law on fire hazardous and explosive goods.