Three people including the nephew of the Berlin Christmas market attacker Anis Amri have been arrested in Tunisia.
Tunisia's Interior Ministry said Amri - who was shot dead on Friday - had sent his 18-year-old nephew Fedi money to join him in Europe.
Twelve people were killed and dozens more injured in the attack on Monday.
The policeman who was shot during the firefight with Anis Amri has been pictured speaking from his hospital bed.
Cristian Movio has been widely praised from officials in both Germany and Italy after helping apprehend Anis Amri in Milan on Friday.
Movio and his colleague Luca Scata had spotted Amri acting suspiciously near a train station in Sesto San Giovanni when they came under fire.
Amri was shot dead by Scata a short while later.
The funeral for the lorry driver killed in the Berlin Christmas market attack has taken place in his home country of Poland.
Footage has emerged of the final moment before a truck ploughed into a crowd of people at a Christmas market in Berlin.
A man is being hunted by German police after a lorry ploughed into a Berlin Christmas market on Monday, killing 12, but who is the suspect?