Sweden: Security police say suspect in truck attack previously known

The man in custody suspected of carrying out the Stockholm truck attack has previously figured in intelligence material, Swedish security police said on Saturday.

"The arrested man was not part of any of the security police's ongoing investigations. However, he is a person who has previously figured in our intelligence flow," head of the Sapo security police, Anders Thornberg, told reporters. National Police chief Dan Eliasson confirmed that the suspect is a 39 year-old from Uzbekistan. 

Swedish police are increasingly confident they have caught the man responsible for the attack, but would not rule out the possibility that other people had been involved.

"Nothing points to that we have the wrong person, on the contrary, suspicions have strengthened as the investigation has progressed," Eliasson told reporters. "We still can not rule out that more people are involved." 

A truck on Friday ploughed into a crowd on a shopping street and crashed into a department store in central Stockholm, killing four people and wounding 15 in what the prime minister said appeared to be a terrorist attack.

The area of the attack in central Stockholm was evacuated, including the main rail station, and remained cordoned off late on Friday. All subway traffic was halted on police orders and government offices were closed.