A hazardous materials investigation is underway in Hollywood, where a woman passed out after she was exposed to an unknown substance on Monday afternoon, according to police.
Circumstances surrounding the incident remain largely unclear as the probe continues, but Los Angeles Fire Department crews tell CBS LA that they were called to the Hollywood Arts Collective apartments, in the 1600 block of Schrader Boulevard, at around 4 p.m.
They said that as they continued to investigate the incident, some testing that they had done began coming back positive, and that some firefighters who were exposed to the substance had to be isolated and decontaminated…