Swedish police say several people in the city of Uppsala in eastern Sweden have been found with injuries that indicated gunfire after loud bangs were heard in the city.
In a statement, the police said they had received calls from members of the public who heard noises that sounded like gunshots being fired in the city centre.Â
Emergency services are on the scene, the police added.
"Several people have been found with injuries that indicate gunfire," the statement said.
A local hospital declined to comment on the condition of those injured.
Police said they had cordoned off a large area and had begun an investigation.
Ten people were killed in February in the Swedish city of Orebro in the country's deadliest ever mass shooting, in which a 35-year-old unemployed loner opened fire on students and teachers at an adult education centre.