Police in the German city of Potsdam have carried out a controlled explosion on a device filled with nails next to a Christmas market.
The device, that also held batteries and wires, was sent to a pharmacy in the city south-west of Berlin.
Police initially said they found explosives inside, but later said there was no detonator.
Last December, 12 people died when an Islamist attacker hijacked a lorry and drove it at a Berlin Christmas market.