A driver killed a teacher and injured 14 students after ploughing into them in a 'rampage' in Berlin.
Footage shows the 29-year-old suspect being led away to a police car, while his silver Renault sits smashed through the front window of a perfume shop.
Officers searched the German-Armenian driver's vehicle and found placards relating to Turkey inside, the Daily Star reports.
An investigator told the German newspaper Bild that the attack was the work of an 'ice-cold killer'.
The newspaper released a picture of the driver being detained, wearing a yellow pullover, jogging trousers and red trainers.
Iris Spranger, Berlin's state interior minister, said: "There are said to have been placards inside (the vehicle) but there was no letter of confession."
The suspect was first detained by bystanders before he was arrested by authorities after his car veered off the road and collided with multiple people.
Captured footage of the aftermath shows badly wounded shoppers laying across the pavement and screams of witnesses can be heard in other videos from the scene.
German newspaper Bild cited an investigator as saying: "(This was) by no means an accident - someone on the rampage, an ice-cold killer."
Actor John Barrowman, who was at the scene, wrote on Twitter: "I heard the bang and the crash when we were in a store, and then we came out and we just saw the carnage."
The site of the incident, a shopping street near a McDonald's restaurant, was cordoned off as a helicopter circled above.
A government spokesperson said: "The federal government has of course learned of this terrible incident in Berlin today and is very concerned and distressed about it.
"Our thoughts, our sympathy are with the injured and their relatives."
The fire service earlier said a dozen people were injured and six were in a life-threatening condition.
Police later said 14 students were among the injured.
The tragic incident took place close to the fatal attack back in December 2016, when Anis Amri hijacked a truck, killed the driver and then ploughed it into a crowded western Berlin Christmas market.
Amri, a failed Tunisian asylum seeker with Islamist links, then fled to Italy, where he was shot dead by authorities.
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The 24-year-old had been asked to show his identity documents by police before pulling out a pistol who then returned fire hitting the suspect in the chest.
Security officials later confirmed "without any shadow of a doubt" that the dead man is Amri after identifying him using his fingerprints.
German police spokesperson Thilo Cablitz said: "The wounds of 2016 are not healed, everyone remembers it."
