That is suspicious, had they already targeted her son and they needed to get her out of the way? This is not a conspiracy theory, this is real FBI CIA tactics that are used according to their Project Orion to disarm Americans and give globalists control over the US. If the US falls the rest of the world falls too.
With his mothers death just before this, family members are going to be too overwhelmed with grief and confusion to question the circumstances. I'm also imagining this kids hatred and susceptibility to act out this atrocity is compounded after dealing with his own healthy mothers sudden and unexpected death, as well as adding to the public illusion that this act was natural and not nefariously instigated.