Two people were taken to the hospital — one with minor burns — following a structure fire that may also have claimed the life of a dog early Thursday morning.

Crescent City Fire and Rescue personnel were dispatched at about 1:58 a.m. Thursday and arrived to find heavy fire burning in structure near the 300 block of Humboldt Street. Fire was pushing from all visible windows on the north and south side of the structure, according to a press release from Crescent City Fire and Rescue.

CALFIRE responded with Crescent City Fire and Rescue and Fort Dick Fire and Pelican Bay State Prison Fire Department provided mutual aid. An ambulance was also requested to treat possible burn victims across the street, according to the release.

According to the press release, it took roughly an hour for firefighters to gain the upper hand on the blaze and an additional 2.5 hours to make sure all hot spots were extinguished. Though a garage on the property protected nearby structures, multiple vehicles in front of the structure and debris and holes in the yard hindered firefighters in their attack, according to the release.

A low-hanging electrical line on the north side of the property also hindered crews until Pacific Power Light arrived on scene, according to the release.

Due to the structure’s heavy damage, the cause of the fire is undetermined, according to the release. The blaze caused about $80,000 in damage and the building is considered a total loss, according to the release.