A gunman opened fire at a market in the town of Trelleborg, Sweden, injuring at least four people, Sweden's Aftonbladet reports. Local media reported that at least four people had been taken to hospital. Some reports suggested that up to seven people might have been seriously injured across several locations.

A police spokesman confirmed to Express that police were investigating reports of a shooting, and that an area around the crime scene has been temporarily closed. At 22:30, the police received several calls about a suspected shooting in central Trelleborg, which has a population of about 40,000, according to local media reports.

"We have received several reports of a shooting in Trelleborg. We were quickly on the spot and found that, within a fairly limited area, we find more people with suspected shot injury. We are blocking certain areas and will conduct an investigation. I do not have any more information at this time. But we are at the scene and investigating."

Fyra till sjukhus efter skottlossning – stor polisinsatshttps://t.co/GDNzmouVhK pic.twitter.com/MnOcKi1dhp

— Svenska Dagbladet (@SvD) October 12, 2017

Police said several people were injured at different locations. The police spokesman, Fredrik Bratt, added that multiple victims suffered “suspected gunshot” wounds and that "a major operation was underway."

JUST NU: Fyra personer skadade efter skottlossning i Trelleborg.https://t.co/w8Aq5J8sXl pic.twitter.com/EQGF6shRTX

— Expressen (@Expressen) October 12, 2017

“There were many shots. We saw someone running outside,” an eyewitness told the Swedish publication Expressen.

BREAKING - MASS SHOOTING IN SWEDEN: 4 people shot in city of Trelleborg near Malmö. Massive police operation ongoing https://t.co/lEJsVsYCjR pic.twitter.com/DOSH0p9jxB

— PeterSweden (@PeterSweden7) October 12, 2017

“I was at home at the computer when I heard a loud bang,” Aron Tydén – another person in the area – told the publication, claiming that he heard people running.

Police have cordoned off the area, allowing ambulances through. The victims were reportedly rushed to hospitals in Malmö and Lund. Forensics team and a canine unit have also been dispatched to the scene of the incident.