Five people were killed and two others injured in a bow-and-arrow attack in Norway.
A 37-year-old Danish man has been arrested on suspicion of the attack in the Norwegian town of Kongsberg.
Two people, including an off-duty police officer, were wounded in the attack on Wednesday, which took place across different locations in the town.
"The police are giving this information because of all the rumours on social media regarding people who are not linked to these very serious acts," police said in a statement.
The suspect, who was apprehended, was believed to have been acting alone, police said. They said nothing about a possible motive.
Police officers investigate after several people were killed and others were injured by a man using a bow and arrows to carry out attacks, in Kongsberg, Norway, October 13, 2021.
NTB
The death toll was the worst of any attack in Norway since 2011, when far-right extremist Anders Behring Breivik killed 77 people, most of them teenagers at a youth camp.
The attacks went on for more than half an hour over a "large area" of Kongsberg, including at a Coop Extra grocery store, the Aftenposten newspaper cited police as saying.
A woman living near the store said she had heard alarms as she was walking home. "I saw a group of police officers, including one who held several arrows in his hand," the woman, Marit Hoefle, told newspaper Investigators are considering whether the attacks amounted to an act of terrorism, and said they would give a more detailed account of the incident later on Thursday.
Police were interrogating the suspect and he was cooperating, his defence lawyer said. "He is cooperating and is giving detailed statements regarding this event," lawyer Fredrik Neumann told public broadcaster NRK.
A bow and arrow had been used in at least several of the attacks, police said, adding they were investigating whether another weapon was used.
Images from one of the crime scenes showed an arrow that appeared to be stuck in the wall of a wood-panelled building. About 28,000 people live in the Kongsberg municipality.