A 43-year-old man shot dead nine people of foreign descent in the western German city on February 19. The shooter is then believed to have killed his mother and himself.

Police said up to 2,600 people took part in a demonstration in Berlin alone.

Organizers said they wanted the background of the incident cleared up beyond any doubt, urging officials to also take note of the possibility that authorities might have looked the other way. They also called for support and justice for the victims, survivors and their relatives.

In Hanau, police estimated that more than 120 people came to a memorial in the city’s market square with a minute of silence on Wednesday evening. Events were announced online in numerous other cities.

In Hamburg, police said 500 people were allowed to gather for a commemoration. Originally up to 800 had sought to take part, but officials said not everyone could due to coronavirus restrictions.

Permier of the state of Hesse Volker Bouffier is to meet again with the victims’ relatives next week.