Three people were taken to hospital after an attack in the Swedish town of Eskilstuna on Thursday in what appeared to be an assault with a weapon, local police said.
Swedish TV4 reported that the incident was a knife attack.
The TV station initially said an attack took place at a school but the headmaster later said the pupils had been at a different location at the time of the incident.
More details to follow

US, Iran reach agreement to end war, signing set for Friday
Nine killed, historic monastery on fire as Ukraine faces major Russian attacks
Trump criticises Israel strike as US, Iran inch closer to deal, timing remains unclear
Congo says 782 Ebola cases confirmed, two new health zones affected
Israel says military attacks Hezbollah targets in Beirut's southern suburbs
12 people killed in Missouri plane crash, skydiving company says
Protesters set Tesla ablaze, smash UN office's windows in anti-G7 march in Geneva
Swiss voters reject population cap in referendum, avoiding EU clash
