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STOCKHOLM (Reuters) - An explosion overnight in the southern Swedish town of Helsingborg caused extensive damage to the entrance of a police station, authorities said on Wednesday.
Nobody was injured in the explosion, which occurred shortly after midnight local time and also shattered windows in a neighbouring building, police said in a statement.
"It is unclear what caused the detonation," police said.
Police said they were carrying out checks in the Helsingborg area but had not made any arrests. Gang-related violent crime in southern Sweden has been in the spotlight in recent years with several shootings in the region.
(Reporting by Niklas Pollard; Editing by Simon Johnson)