Local rescuers found a man who apparently swallowed drain cleaner and was heard moaning in pain on a Angeles National Forest hillside, officials said.
The Montrose Search and Rescue Team responded to the Lopez Canyon Area in the nearby Sylmar area for an adult man Thursday afternoon and did not locate him until dark, about 11 p.m., according to Sheriff's Lt. Elizabeth Sachs.
The Los Angeles County Fire Department determined he had swallowed drain cleaner, she said.
He was transported via ambulance to a local hospital for treatment and evaluation.
Editor's Note: This article was updated at 12:25 p.m.