- Associated Press - Thursday, May 22, 2014

PORTLAND, Ore. (AP) - A Portland Fire and Rescue spokesman says a chemical reaction caused a Wednesday night house fire and some of the injuries suffered by an occupant.

Firefighters arrived at the southeast Portland home to find three people outside, including one person with burn injuries. Fire crews rescued a dog that was trapped in a bathroom.

Lt. Rich Chatman says a fire investigator found chemistry lab equipment in a bedroom. Firefighters trained to deal with hazardous materials were called to identify some of the items. Chatman says sulfuric acid was among the substances found.

Damage was estimated at $20,000.