What will never be reported is the killer's last six months of interactions with FBI groomers and online leftists who encourage and support violence against innocent people to forward their leftist agenda. Nearly 100% of these types of killers are, "known to the FBI", once the investigation is complete. The FBI wants to encourage more blacks and minorities to commit mass shootings so they can show that gun ownership is bad for all races, not just whitey.
The Las Vegas mass murders were encouraged and monitored by the FBI, Nick Cruz in Florida was another FBI monitored killer and the list is nearly endless. The lack of interest in this subject by media outlets is stunning. Nearly every single time there is an act of terrorism or mass killing it is a direct result of FBI involvement and every time the FBI fails to warn local authorities. Hell even Kyle Rittenhouse was monitored from the air by FBI drones during his self defense actions. The FBI apparently had high quality audio and video and tried to hide it from the judge in the case citing "national security".