It's reported a person's been arrested in connection with an attack on the Berlin Christmas market, in which 12 people died.
Local media say police don't believe it's the driver of the lorry, which crashed into shoppers.
Another man, who was detained yesterday has been released without charge.
Meanwhile, an international manhunt is underway after reports that police are searching for a Tunisian male. It's claimed authorities found documents in the truck linked to this man.
The identification was discovered under the driver's seat of the lorry.
More to follow.