One person has been found dead and three others were found ill, possibly from carbon monoxide poisoning, at a four-story apartment in Koreatown Thursday evening.
Hazardous materials experts are at the 90-year-old building at 920 S. Hobart Blv. to conduct tests.
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One other person died at the building in recent days, according to Brian Humphrey of the Los Angeles Fire Department. It wasn't clear if carbon monoxide played a role in that death.