Two bodies were discovered inside a burning underground utility vault beneath a Fresno overpass Monday morning after firefighters navigated a hazardous confined space packed with live electrics.

The deadly blaze sparked a massive technical rescue response after smoke was seen rising from the bunker, which investigators say had been converted into a makeshift homeless encampment that may have existed for months.

Two bodies were discovered inside a burning underground utility vault beneath a Fresno overpass. Fresno Fire Department

The deadly blaze sparked a massive technical rescue response after smoke was seen rising from the bunker. Fresno Fire Department

Investigators say it had been converted into a makeshift homeless encampment that may have existed for months. Fresno Fire Department

“It was a challenging situation,” Fresno Fire Chief Billy Alcorn told KGPE .…