On 3 March 2025, a car was driven into a carnival crowd at Paradeplatz [de], a popular pedestrian area in Mannheim, Baden-Württemberg, Germany.

[5][6][7] Germany was celebrating Rosenmontag or Rose Monday, a carnival held before Ash Wednesday and the beginning of Lent, causing German police to be on high alert.

[7][11] Surveillance footage showed a black 2002 Ford Fiesta making a turn from the city centre ring into Planken [de], a shopping lane, accelerating to at least 60 km/h.

[24] A 40-year-old man identified by police as Alexander Scheuermann,[25] a German citizen from the neighbouring city Ludwigshafen, has been held as the driver of the vehicle.

Scheuermann has been linked to "Ring Bund", a neo-Nazi arms trafficking group based out of Bavaria and associated with the Reichsbürger movement, which had been shut down in 2022.

[29][31][32] Police are investigating potential ties to the German far right-wing movement after images of Scheuermann surfaced attending an NPD protest march in October 2018.