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A Pakistani asylum seeker, the only person being held in connection with the attack has been released. German police say the perpetrator may still be at large.
Also in the programme: a river of liquid iron is discovered in the earth's outer core, and the man who photographed the assassination of the Russian ambassador to Turkey.
(Photo: Members of the Germans parliament attend a service at the Church of Remembrance at Breitscheidplatz, the area where a truck ploughed through a Christmas market in Berlin. Credit: Michele Tantussi/Getty Images)
The German authorities say they can't be certain that a man arrested on Monday was the driver of the truck that smashed into a Christmas market in Berlin. Twelve people died when the vehicle ploughed into the crowded square. The German interior minister, Thomas de Maiziere, said the suspect was an asylum seeker who was probably from Pakistan, but the man denied his involvement. Federal prosecutor Peter Frank, said the style of attack and the target suggested Islamic extremism.
Also in the programme, Russian investigators arrive in Turkey after ambassador assassinated in Ankara and a new treatment for prostate cancer.
(Photo: Scene around a truck that crashed into a Christmas market in Berlin. Credit: ODD ANDERSEN/AFP/Getty Images)
A truck has been driven into a crowd in the German capital, Berlin, leaving at least nine dead. Police suspect it was a deliberate attack on the Christmas market next to the Kaiser Wilhelm memorial church. We speak to an eyewitness.
Also in the programme, the Russian ambassador to Turkey has been assassinated; the head of the United Nations in West Africa, Mohammed Ibn Chambas, on the options for Gambian president, Yahya Jammeh, and we speak to Christopher Baker, the lawyer for the Christine Lagarde, head of the IMF, who has been found guilty of negligence when she was French finance minister.
(Picture: A policeman stands near the site where a truck sped into a Christmas market in Berlin. Credit: Getty Images)
LA Times journalist Nabih Bulos watches buses cross at Ramousseh in south-western Aleppo. Meanwhile the UN approves a resolution to deploy observers in eastern Aleppo.
Also on the programme: the rise of armed Rohingyas; Lagarde guilty of negligence and Pokemon goes orchestral.
(Picture: A bus carrying a group of fighters and their families leave eastern neighborhoods of Aleppo, Syria, 19 December 2016 Credit: EPA/STR)
President Rodrigo Duterte's most outspoken critic speaks to us about extra-judicial killings in the Philippines - but how will the US respond? The former US Assistant Secretary of State for East Asia and Pacific Affairs, Christopher Hill, says the US is not turning a blind eye to what's happening, but it has limited leverage over the Philippines' domestic policies.
Also on the programme: Philippines Senator Leila de Lima say President Duterte 'a killer'; Syrian rebels burn evacuation buses; and Pakistan ends ban on Bollywood films amid Kashmir tensions.
(Photograph shows Philippine President Rodrigo Duterte. Credit: AFP/Getty Images)
Philippines Senator Leila de Lima is leading efforts to impeach President Rodrigo Duterte after claims he's personally responsible for extrajudicial killings. She tells the BBC that she fears for her safety, but won't leave the Philippines.
Also in the programme, demonstrators in Poland protest against curbs on media access to parliament. And fresh efforts to curb the looting of antiquities from Mali.
(Photo: Rodrigo Duterte at an election campaign rally in May, 2016. Credit: Getty Images)