Happened in an entertainment district. That usually means it's clan-related, i.e. foreign organized crime.

Edit: looks like I was right. Police suspect north african organized crime. Fun fact: they also firebombed a coffee shop in Solingen a few months ago, the same Solingen that had a Diversity Festival during which a muzzie killed 3 people recently.

Source: https://jungefreiheit.de/politik/deutschland/2024/bombenanschlag-in-koeln-polizei-verdaechtigt-mocro-mafia/

Happened in an entertainment district. That usually means it's clan-related, i.e. foreign organized crime.