A fiery pileup inside a tunnel on Interstate 80 in Wyoming left at least two dead with five others injured late Friday morning, Report informs via Fox News.

Fire and smoke billowed from the tunnel as people ran for safety.

Several outlets noted that its structural integrity had been threatened.

The Wyoming Department of Transportation said on social media that geologists and bridge engineers with its team were “en route to assess the tunnel infrastructure.”

The crash happened around 11:37 a.m. local time in the westbound Green River Tunnel, which caused a fire inside the tunnel, according to the Wyoming Highway Patrol.