BERLIN, GERMANY - DECEMBER 21: A woman lights candles in the shape of hearts among flowers and candles left by mourners at a makeshift memorial near the site where two days before a man drove a heavy truck into a Christmas market in an apparent terrorist attack on December 21, 2016 in Berlin, Germany. So far 12 people are confirmed dead and 48 injured. Authorities initially arrested a Pakistani man whom they believed was the driver of the truck, though later released him and are now pursuing other leads. Among the dead are a Polish man with a gunshot wound who was found on the passenger seat of the truck. Police are investigating the possibility that the truck, which belongs to a Polish trucking company, was hijacked the morning of the attack. (Photo by Sean Gallup/Getty Images)
