Pedestrians flee in terror after truck ploughs into crowd in Stockholm

Swedish Police claims to have arrested the driver of the beer delivery truck that rammed into people at Stockholm's Drottninggatan (Queen Street) on Friday.

The accused was arrested "on suspicion of a terrorist crime through murder," Karin Rosander, a communications director at the Swedish Prosecution Authority, told AFP.

One Swedish newspaper, Aftonbladet, reported that the accused is a 39-year-old man of Uzbek origin. They added that he was a supporter of the Islamic State (Daesh) group.

The accused was arrested on Friday evening after police released images taken from CCTV footage. The suspect was dressed in a hooded jacket. Another man was arrested later for having associations with the Uzbek man.

While the first arrest was done in Marsta, 40km north of Stockholm, the other was at Hjulsta in the north-west of Stockholm.

"We have investigated several people this evening, who we found interesting in one way or another, and recently we arrested someone we are very interested in," said police investigator Jan Evensson, referring to the Marsta arrest.

At least four people were killed and 15 were injured after the truck crashed into a department store on Friday. The vehicle was hijacked outside a nearby restaurant.

Swedish Prime Minister Stefan Lofven has described it as a terrorist attack, and has asked for tightening of the borders.

"Terrorists want us to be afraid, want us to change our behaviour, want us to not live our lives normally, but that is what we're going to do. So terrorists can never defeat Sweden, never," he said.

Social media comes together to lend support

People took to Twitter to express their solidarity with hashtag #openStockholm to offer a ride, a meal or a place to sleep.