Large chunks of ice fell 200 feet off the roof of Cowboys Stadium on Friday and at least six people were injured at the Super Bowl. According to the Associated Press, one man was struck in the head and another was hit in the shoulder, said Arlington Fire Department spokesman Pete Arevalo. They were in stable condition Friday afternoon. The other four injuries were considered minor. All were contractors working on the stadium.

Authorities said the ice falling off the roof was an unexpected consequence of the winter weather that has paralyzed Dallas this week. They had never before dealt with such a problem. After the incident, stadium officials closed all but one entrance to the stadium and blocked off all potentially dangerous areas. An NFL spokesman says workers and visitors will be safe.