Two people were apparently shot in the incident, which occurred near the town's main shopping street, while two others received other injuries, he said. "We get calls from several people who have heard shots", police spokesman Fredrik Bratt told the Daily Star.
'It was chaotic, ' he said, adding that the police arrived soon after the shooting.
"There are several people who have experienced confirmed gunshot wounds", a statement issued by Police Skåne read.
"We are blocking certain areas and will conduct an investigation".
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They said several people were injured at different locations. "But we are at the scene and investigating".
The condition of the victims is unknown. No suspects are in custody.
According to Swedish state television SVT, city of Trelleborg, located in south of country, opened fire with a gun.
This is a breaking story, more to follow.