Thank you guys!
Looks like a rejected T/O at high speed to me with subsequent hot brakes. Obviously they needed the firebrigade and then they had to close the airport because the firebrigade wouldn't have been ready for a possible other urgency/emergency. Guess this is a common procedure, although I think they should have enough fire fighting capacity at bigger airports like ZRH to be able to handle more than just one case at once. It really messes up the whole approach sequence (we were initially told to expect 45min holding, luckily it turned out to be only 20min at the end). Is this normal at other airports that they have to close it because of a rejected T/O and a busy firebrigade?
I'm basing my statements on assumptions here, although I still don't know the real facts and how serious it was. Just curious about the mentioned scenario.
Someone else with more facts about the incident?
Regards.