He bought the gun legally. Later he applied for a concealed carry permit and a background check discovered the prior. He was denied the permit and his foid car was revoked. He kept the gun
If he had a foid card he had it Illegally since he had to lie on the paperwork to get it, I guess thats on the state of illinois for not doing a proper background check, he also lied on the form to buy the gun where it ask if you have been convicted of a felony