He was being investigated on suspicion of endorsing crimes and disparaging the memory of the dead. That was because of an alleged Twitter post last year approving of the fatal shooting of two police officers in western Germany in January 2022 when they stopped two men suspected of poaching.

Munich prosecutors said that, when the suspect's apartment was searched on Thursday, they found weapons including several knives and clubs, a crossbow, a semiautomatic pistol, thousands of rounds of ammunition and three hand grenades.