Copy cat followups are not uncommon. There are people out there who are just up to the edge of doing something drastic and when an infamous incident takes place, that is all that is needed to push them over that edge.
Every time something like this happens, the anti crowd comes out of their holes and screams for tighter controls to outright bans. I heard that there was an AR involved in this and if so, you can bet the screamers for an "assault weapons ban" (even though an AR is NOT an assault rifle) will be crying for legislation at the federal level. And with the chicken-in-chief in office, don't be surprised if he gets one, though getting it through the house is probably not going to work. That is why he is seeking a reclassification of these arms to that of class 2 status.