A large beer truck crashed into an upscale department store in central Stockholm on Friday, killing at least four people, according to Swedish Prime Minister Stefan Lofven, who called the crash a terror attack. One person was arrested.
People in the downtown area fled in panic, and Stockholm’s Central Station for trains and the subway, which is a few hundred yards from the scene, was evacuated.
Live television footage showed smoke coming out of the upscale Ahlens department store on Drottninggatan Street, which the truck smashed into. The department store is part of Sweden-wide chain.
“Sweden has been attacked,” Lofven said in a nationally televised press conference. “This indicates that it is an act of terror.”
Police said there were no indications of shooting in the area, as Swedish broadcaster SVT reported earlier.
There was no immediate claim of responsibility for the attack. The prime minister said one person was arrested, but gave no further details.
“We stood inside a shoe store and heard something … and then people started to scream,” witness Jan Granroth told the Aftonbladet daily. “I looked out of the store and saw a big truck.”
Photos from the scene showed a large beer truck sticking out of the department store. Aftonbladet reported that Swedish beer maker Spendrups said one of its trucks had been hijacked earlier Friday.
Lofven, who was visiting a school in central Sweden hit by a bus crash Sunday that killed three high school students, said he and the Swedish government were being updated on developments.
Friday’s crash is near the site of a December 2010 attack in which Taimour Abdulwahab, a Swedish citizen who lived in Britain, detonated a suicide bomb, killing himself and injuring two others.
Abdulwahab rigged a car with explosives in the hope that the blast would drive people to Drottninggatan — the street hit Friday — where he would set off devices strapped to his chest and back. The car bomb never went off, and Abdulwahab died when one of his devices exploded among panicked Christmas shoppers.
Vehicles have been common weapons in recent extremist attacks.
Last month, in an attack claimed by the Islamic State group, a man drove into a crowd on London’s Westminster Bridge, killing three people and injuring many others before stabbing a policeman to death. He was shot dead by police. A fourth person, a woman thrown into the Thames by the force of the car attack, died Thursday.
ISIS has also claimed responsibility for a truck attack that killed 86 people in Nice, France, in July during a Bastille Day festival and another truck attack that killed 12 people at a Christmas market in Berlin.
This story originally appeared on PEOPLE.com.