Updated: 21/12/16 : 11:20:27Printable Version
German police are searching for a Tunisian over Monday's Berlin Christmas market attack, media reports say.
According to a temporary permit found under a seat in the cab of the lorry that ploughed into crowds, the man, named as Anis A, was born in 1992 in the city of Tataouine, the reports say.
A police operation is said to be under way in the state of North Rhine-Westphalia where the permit was issued.
Reports say the suspect may have been injured in a struggle with the driver.
According to the newspapers Allgemeine Zeitung
, the Tunisian suspect is aged 21 or 23 and is known by three different names.
said "measures are now imminent" in North Rhine-Westphalia but there are no details.
Twelve people died and 49 were injured when the truck was driven into crowds at the Breitscheidplatz Christmas market.
So-called Islamic State (IS) said one of its militants carried out the attack, but offered no evidence.