Stockholm police destroyed a bag containing explosives that was found in a park in the Swedish capital late on Sunday night and are investigating further, they said on Monday.
The incident took place less than three weeks before a Sept. 11 general election in which crime is set to be a major issue among voters.
"Currently, there is no suspicion that this is a terror-related crime," daily Dagens Nyheter quoted Erik Akerlund, chief of police for the city's Norrmalm district, as saying.