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.
A woman has told ITV News about the moment she witnessed a lorry plough through a Christmas market in Berlin.
Emma Rushton from Warwickshire was sitting in the market with a friend when the tragedy happened.
Describing the moment she saw the vehicle Emma said "it was going through at around 40 mph".
When asked if she believed it looked like it could have been an accident Emma said there was no way it could have "just veered off" the road.
"It wasn't an accident, there is no way it could have been there just by veering off the roads and it showed no signs of slowing down at all", she said.
Emma said after the lorry had driven through the market they saw people "holding their heads, there were pools of blood on the floor and there were people in the recovery position".
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?