There's been a mass shooting attack in Sweden that has left at least 10 people dead, including the gunman.
Sweden's Prime Minster Ulf Kristersson said it was a "painful day" for the country.
Here's what we know.
How many people have been killed?
At least 10 people were killed in the shooting, Swedish police said, but they warned the death toll could rise.
Police said the gunman was believed to be among those killed and that a search was continuing at the school for other possible victims.
"We know that 10 or so people have been killed here today. The reason that we can't be more exact currently is that the extent of the incident is so large," Roberto Eid Forest, the local police chief, said.
The damage at the crime scene was so extensive that investigators were unable to be more definitive about the number of fatalities, he said.
Emergency personnel and police officers at the Campus Risbergska school after the shooting. (Reuters: TT News Agency/Kicki Nilsson )
Where did the shooting happen?
The shooting took place shortly before 1pm, local time, in Orebro, around 200 kilometres west of Stockholm, at the Risbergska school for adults.
The school was for adults who did not complete their formal education. It also runs Swedish classes for immigrants, vocational training and programs for people with intellectual disabilities.
It is located on a campus that also houses schools for children.
What did witnesses say happened?
Maria Pegado, 54, a teacher at the school, said someone threw open the door to her classroom just after lunch break and shouted to everyone to get out.
"I took all my 15 students out into the hallway and we started running," she said.
"Then I heard two shots but we made it out. We were close to the school entrance.
"I saw people dragging injured out, first one, then another. I realised it was very serious," she said.
A witness on the scene named Marwa said a man standing next to her was shot in the shoulder.
"He was bleeding a lot. When I looked behind me I saw three people on the floor bleeding. Everyone was shocked," she said.
"They said, 'Go out! Get out!' I and my friend tried to save the life of this person.The police were not on site and neither was the ambulance. So we had to help.
"I took my friend's shawl and tied it tightly around his shoulder so that he wouldn't bleed so much," Marwa said.
Many students in Sweden's adult school system are immigrants seeking to improve their basic education and gain degrees to help them find jobs in the Nordic country while also learning Swedish.
What is known about the gunman's motive?
Police cars are parked near the suspect's house after the deadly attack. (Reuters: Philip O'Connor)
The gunman's motive was not immediately known.
Chief Forest said police believed the gunman had acted alone and that they did not currently suspect terrorism as a motive, though he cautioned that much remained unknown.
He said the suspected gunman had not previously been known to police.
"We have a big crime scene, we have to complete the searches we are conducting in the school. There are a number of investigative steps we are taking: a profile of the perpetrator, witness interviews," he said.
Police said they had opened an investigation into the murder, arson, and an aggravated weapons offence.
"Today, we have witnessed brutal, deadly violence against completely innocent people," the prime minster told reporters in Stockholm.
"This is the worst mass shooting in Swedish history. Many questions remain unanswered, and I cannot provide those answers either," Mr Kristersson said.
"But the time will come when we will know what happened, how it could occur, and what motives may have been behind it. Let us not speculate."
Does Sweden have a gun violence problem?
"It is a very painful day for the whole of Sweden," Mr Kristersson said on X.
"It is hard to take in the full extent of what has happened today, the darkness that now lowers itself across Sweden tonight," he said.
Sweden has been struggling with a wave of shootings and bombings caused by an endemic gang crime problem but fatal attacks at schools are rare.
Ten people were killed in seven incidents of deadly violence at schools between 2010 and 2022, according to the Swedish National Council for Crime Prevention.
In one of the highest-profile crimes of the past decade, a 21-year-old masked assailant driven by racist motives killed a teaching assistant and a boy, and wounded two others in 2015.
In 2017, a man driving a truck mowed down shoppers on a busy street in central Stockholm before crashing into a department store. Five people died in that attack.
Reuters/AP
