Help! Job drama!

The last few days on my new job, two coworkers have been going at it, taking turns getting each written up over petty crap. So today after another one of their hissy fits, THEIR supervisor pulled me in and asked what was going on. I’m usually a “I have no idea what you’re talking about” person lol I make sure to mind my own business. But today I was thrown off and told it. The fighting coworkers just an particularly rude exchange of words today, so it wasn’t that bad, and it happened right in front of me so it wasn’t a secret but I still be weird. Should I feel bad?