Mourners are laying flowers near the scene of the deadly Christmas market attack as investigators puzzle over the motive of the suspect.

Hundreds of people in Magdeburg formed a human chain on Monday to remember the victims of the attack on a Christmas market in the city, and to stand against right-wing extremists seeking to exploit the killings.

Far-right co-chair Alice Weidel says attack was ‘an act of an Islamist full of hatred ... for us Germans, for us Christians’