Fire fighter killed in massive explosion
Authorities in Wisconsin have now released dashcam video showing a deadly explosion.
You can see where emergency crews were standing near an evacuated zone of downtown Sun Prairie, Wisconsin when the blast rocks the area.
Debris shoots into the air as people run to take cover.
One firefighter died and several others were injured in the incident.
Officials say the explosion happened after a private contractor hit a natural gas main.
Volunteer firefighter 34-year-old Cory Barr was killed.
He co-owned one of the businesses destroyed by the blast.
Video courtesy: Sun Prairie Police Department