A power outage at the Ford Rouge Complex in south Dearborn caused the evacuation of the Severstal Dearborn facility Thursday night.
Dearborn police and fire departments were called to the scene for what was originally thought to be multiple reports of fires in the complex.
Severstal reports that the outage was caused by a problem by "an accident" at DTE Energy's facilities, which resulted in the spillage of some molten steel at the plant.
The spill caused a small fire, which was quickly extinguished.
Police told the Detroit News that the power outage may have also tripped the fire alarms.
Severstal evacuated its facility as a precaution, and power was restored as of 11 p.m. Thursday.
However, a portion of the plant was evacuated again on Friday morning when a pipe exploded in the facility. It's not clear whether the explosion is related to the power outage.
No one was injured.
Correction: This article originally stated that the power outage was caused by a steel overflow at Severstal's facility.