Stockholm officials, meanwhile, moved thousands of flowers at a makeshift memorial to a nearby square after a fence outside the department store was overwhelmed with tributes and threatened to collapse. Mr Hysing said "the evidence looks very strong" that the Uzbek man was the driver of the hijacked truck.
"We know that the suspect had expressed sympathy for extremist organizations, among them IS", Jonas Hysing, chief of national police operations, told a news conference, using an acronym for the ultra-hardline militant group.
Swedish prosecutors yesterday arrested a second person in connection with the truck attack and were holding four other people.
The suspect eluded authorities by giving police a wrong address after his residency request was rejected in June 2016, said Hysing, the operative head of the attack investigation.
The British government named the Briton as Chris Bevington, an executive at Swedish music-streaming service Spotify.
Two Swedes were also killed in the attack, and 15 people were wounded.
An Uzbek man suspected of ramming a truck into a crowd in Stockholm, killing four people, had expressed sympathy for Islamic State and was wanted for failing to comply with a deportation order.
Sweden authorities have yet to identify the names of the killed, but The Associated Press breaks down the deceased as including two Swedes as well as a British man and a Belgian woman.
According to The Daily Mail, Uzbekistan-born Rakhmat Akilov is a father to four children, and his identity was revealed due to him matching the physical description of two photos taken a year ago as part of an investigation launched in order to find out whether this man was indeed planning a terrorist attack, as his name had appeared on a list of those individuals who needed to be looked into by security personnel. The explosives had originally been in the glove compartment, this report originally released by local Swedish media.
One child was injured but not seriously, a spokeswoman for Stockholm County Council confirmed.
Belgian news agency Belga said the Belgian woman had been reported missing and was identified by her identity papers and later by DNA testing.
Papusa Ciuraru, whose foot was crushed by a boulder displaced by the speeding truck, told the Expressen daily "I thought everyone would run past me and save themselves".
Norwegian's security agency said it wasn't clear if the teen planned to carry out an attack with the primitive homemade device police defused without any injuries.
Fifteen people were injured, including two who were in critical condition.
The Ahlens department store apologized "for a bad decision" in a statement on its Facebook page.
Witnesses say the truck drove straight into the entrance of the Ahlens Department Store on Drottninggatan, the city's biggest pedestrian street, sending shoppers screaming and running. It was quickly put out.
The Swedish department store that was rammed by a stolen beer truck, leaving four people dead and 15 injured in Stockholm, says it regrets an announcement that it was reopening Sunday to sell damaged goods at a "reduced price".
Since the attack, police have conducted raids and questioned scores of people.
Sweden's SAPO security police said Sunday it was working to find "any abettor or network involved in the attack".
Bannon's future in doubt as president changes tack
That, Trump said, is "very bad for Russia" and "very bad for mankind" and the world. " Trump has been Trump for a long time ". The more likely outcome if Bannon goes is that he returns to Breitbart and continues to expand on its emerging media empire.