Kansas City Chiefs fans were among the 12 people who required amputations due to frostbite, Research Medical Center said in a statement Friday.

While the Kansas City hospital didn't provide an exact figure for how many people who attended the Jan. 13 wild-card game against the Miami Dolphins needed the surgical procedure, it did acknowledge that fans were part of its current total.

RMC also said it expects that number to grow as the "injuries evolve" over the next two-to-four weeks.