We (my dept) don't routinely get gun check information. I'm curious to know how the gun purchases came to be known by the police. Either a friend/family member reported it or the cops went and specifically checked on it after learning that the guy was fired and was acting erratically.
Considering how small our community is, my guess is that someone who knew Pyles "warned" ODOT directly that he had a gun, and they called the police with the information.
Which also makes me think that he wasn't hiding the purchases, but was probably talking openly about his new toys.
And there is nobody so far reporting any kind of erratic behavior.
He was detained only because he bought three "assault weapons."
(Heckler & Koch .45-caliber handgun, a Walther .380-caliber handgun and an AK-47 rifle. All of which are semi-automatic, for the record.)