A hijacked truck rammed into cars and injured eight people in the German city of Limburg last night.
Police are probing if the incident is linked to terrorism.
The driver, who was also injured, has been arrested.
"Based on what we have learned and several witness accounts, the man seized control of the truck at about 5.20 pm (1520 GMT)," police said in a statement.
According to police, the lorry slammed into eight cars that were waiting at a traffic light near the main railway station of Limburg in Hesse state, "crushing them together".
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Several people were being treated in hospital.
A spokesperson for West Hesse police said they were looking into all motives behind the incident, but added: "We currently do not have sufficient information about what was behind it."
The police have not ruled out the possibility of terrorism and said it was normal procedure for the driver to be arrested in such circumstances.
Police deployed officers and a helicopter following the incident in the German city of 35,000 inhabitants.
This morning the site is still bing assessed by police investigators.
The truck has been towed.
The Mayor of Limburg, Marius Hahn, told the German Press Agency: "I am shocked and in my thoughts with the injured accident victims and their families."
