Only later was it learned that the emergency was a deadly one.
A large hydraulic type lift used to hoist workers to the higher sections of the construction project tipped over and a worker fell 150 feet to his death.
Construction was immediately halted and an emergency response team investigation began. The tragedy is the first fatality at the new downtown Detroit facility that will be home to the NFL's Detroit Lions.
A worker, who spoke on the condition of anonymity, told the media "there was a lot of commotion, then we could see that one of the scissors lifts had tipped over. Then, we could see that there was someone trapped underneath."
Lions vice-president of stadium construction Tom Lewand stated "our thoughts and prayers are with this family right now." Lions and Ford Field officials are expected to release a complete statement on this morning's events later this afternoon.
Preliminary reported stated that construction was expected to resume on the stadium project tomorrow, but whether or not that happens in light of today's tragedy remains to be seen.