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 lights at Berlin's Christmas market have been switched back on two days after the lorry attack that claimed the lives of 12 people and injured dozens more.
ITV News reporter Joanna Partridge, who is in Berlin, said people were able to walk between the stalls again before the market's planned reopening on Thursday.
She said public access was possible after police reopened the crash site and the road adjacent to it.
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?