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Heroin Overdose Death In Santa Clarita Jail Still Under Investigation

Heroin Overdose Death In Santa Clarita Jail Still Under Investigation

Homicide detectives are still unclear on how a Valencia woman ingested an extremely lethal dose of heroin, which led to her death in a Santa Clarita Valley jail cell back in June, officials said.

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Jenna Coleman, 27, of Valencia, was found unresponsive during a security check at the jail around 12:08 p.m. on Saturday, June 28.

Los Angeles County Fire Rescue Paramedics responded and pronounced Coleman dead, according to officials.

Related: Santa Clarita Jail Death Ruled Heroin Overdose By Coroner

But the timeline of her overdose is still unclear weeks later, said Lt. Steve Jauch of the Sheriff’s Department Homicide Bureau.

Coleman was arrested Thursday, June 26 at 9:25 a.m. by Santa Clarita Valley Sheriff’s Station deputies for possession of a controlled substance, and was being held in lieu of $10,000 bail, according to Sheriff’s Department arrest records.

Recently completed toxicology tests indicate Coleman had 0.34 micrograms per milliliter of morphine in her blood, Jauch said.

In most cases, a lethal dose would be considered about 0.20 micrograms per milliliter, he said, noting while toxicology reports list morphine, heroin, a morphine derivative, was the drug she ingested.

Related: UPDATE: LASD: Woman Inmate Found Dead Saturday At SC Sheriff’s Station

There’s no information available to detectives about how or when she took the fatal dosage, Jauch said.

“There is no evidence of any type of balloon,” Jauch said. “We just don’t know when that ingestion occurred.”

A balloon is a vessel, such as a plastic bag or container, in which drugs are placed by smugglers who then swallow the narcotics and pass it through the digestive system for later use.

There was also no clear scars or marks on Coleman.

“She doesn’t have any evidence of any external or internal trauma,” Jauch said.

Her death was ruled an accidental overdose by the Coroner’s Office.

There is no other information available at this time, Jauch said, but the case is still considered an open investigation.

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Heroin Overdose Death In Santa Clarita Jail Still Under Investigation

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About Perry Smith

Perry Smith is a print and broadcast journalist who has won several awards for his focused, hyperlocal community coverage in several different regions of the country. In addition to five years of experience covering the Santa Clarita Valley, Smith, a San Fernando Valley native, has worked in newspapers and news websites in Los Angeles, the Northwest, the Central Valley and the South, before coming to KHTS in 2012. To contact Smith, email him at