They said they have been questioning people in connection with the case but no one else has been detained. Heavily armed officers guarded the area and several police vans were present. "That means we are going to continue to check objects, people, vehicles and so on".
On Friday, the man from Uzbekistan is alleged to have barrelled a stolen beer truck several hundred metres down the bustling pedestrian street Drottninggatan in the heart of Stockholm.
"They are very nice people who have lived in Halle for a long time".
Sweden's Prime Minister Stefan gave a defiant message to terrorists and laid flowers at the scene You will not defeat us, you will not govern our lives, you will never, ever win. "It's too much", the 29-year-old railway worker said.
After the rampage, Prime Minister Stefan Lofven said: "Sweden has been attacked".
In 2015, Sweden received a record 163,000 asylum-seekers. She described it as "a bad decision", admitting the proposals would make life even more precarious for refugees.
Sweden was set to hold a minute's silence at midday on Monday to mourn the dead. He urged citizens to "get through this" and strolled through the streets of the capital to chat with them. No identities other than nationalities have yet been made public.
Separately, Sweden is believed to have the highest number of Islamic State group fighters per capita in Europe.
He said there were clear similarities with the deadly attack in London last month. It said the bomb may have partly exploded, burning the driver.
Also yesterday, national police Chief Dan Eliasson said investigators are looking into a device found in the driver's compartment that "could be a bomb" or an incendiary device.
There was no immediate claim of responsibility for the attack in Sweden, which until now had been largely immune from major attacks and where many take pride in an open, democratic society. Support for the opposition far-right Sweden Democrat party, which links worries about education, welfare costs and crime with immigration, has continued to rise.
In a statement released through the Foreign Office, his father John Bevington said the family was "devastated by the untimely and tragic death of our talented, compassionate and caring son Chris".
For decades, Sweden has been among the most generous nations to immigrants.
Visiting the attack site, Sweden's Crown Princess Victoria laid roses on the ground Saturday and wiped away a tear.
A woman places a flower on a fence near the department store, Ahlens, Saturday, April 8, 2017, following Friday's suspected terror attack in central Stockholm, Sweden.
He "showed sympathies for extremist organisations like IS", senior police officer Jonas Hysing told reporters. "Swedish society is built on huge confidence, a sense of community".
Joachim Lindstrom said he wasn't surprised by the attack.
"Just sad I think, sad and mad".
"There are so many of us who want to help, many more than those who want to hurt us".
The incident sent shock waves through the country.
Four people were killed - two Swedes including an 11-year-old girl, and a British man and a Belgian woman - and 15 others were injured. Swedish prosecutor Hans Ihrman said a person has been formally identified as a suspect "of terrorist offences by murder" after a hijacked truck was driven into a crowd of pedestrians and crashed into a department store on Friday.