An articulated lorry has ploughed into a busy Christmas market in the heart of Berlin, killing 12 people and injuring 48.

Germany's Interior Minister, Thomas de Maiziere, said "many things" pointed to a deliberate attack.

Police said on Twitter that the lorry driver had been arrested, and that a passenger died from his injuries.

The market is at Breitscheidplatz, close to the Kurfuerstendamm, the main shopping street in the city's west.

Almost 50 people are in hospital and at least four have suffered serious injuries.