Editors

USA TODAY

At least four people were killed Friday when a truck crashed into a department store in central Stockholm, according to Swedish media.

Here's what we know:

Where did the attack occur?

It took place at the upscale Ahlens department store around 3 p.m. local time. The store is located on Drottninggatan (Queen Street), one of the city's main pedestrian streets, and is part of a Swedish-wide chain.

The truck careened down the street for several blocks, leaving a trail of broken glass, tire tracks and bodies, newspaper Dagens Nyheter reported.

Was it terrorism?

Swedish Prime Minister Stefan Lofven called the incident an apparent "terror attack."

How many were killed or injured?

At least four people were killed and 15 others injured.

Has anyone been arrested?

Despite initial reports that one person was arrested shortly after the attack, police said late Friday that no suspect was in custody. Police released a blurry police photo of the suspect wearing a black, hooded sweatshirt and green jacket.

Who owned the truck?

Swedish beermaker Spendrups said its truck was carjacked earlier Friday, Aftonbladet reported.

"During a delivery to (a) restaurant, and while the driver was unloading, someone jumped into the driver’s seat and drove off with it," Spendrups communications director Marten Lyth told TT Swedish news agency.

Are parts of Stockholm shut down?

The attack brought the city to a virtual standstill, with government offices on lock down, the metro closed and people told to stay out of the city center.

Contributing: Associated Press