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.

A theatre in Magdeburg is to hold a memorial concert on Thursday for victims of the attack on the central German city's Christmas market The traditional Christmas concert at the Magedeburg Theatre is to be changed to reflect on last Friday's attack,