He says that problem could be eased if people discarded fireworks in water and in a metal trash can away from buildings or combustible materials.
"Some people are going to tell you it's rampant and everybody's doing it, I don't think that's the case," said Montgomery, who heard from the Pac-12 and NCAA early in the week. "Obviously, if the FBI gets involved that's a little different level. I think as long as I've been in coaching for 42 years there's been stuff. You hear about it and you never really know for sure."