The young man who carried out an armed attack on a mosque in San Diego had been reported to the police about a year before the attack for being a Nazi sympathizer. Authorities stated that this information was an important sign of the attacker's radicalization process. Reports made before the incident indicated that the young person was inclined towards far-right views and could pose a potential danger. While the investigation continues after the attack, authorities are issuing warnings for early detection of similar situations in society.