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Jonathan Gerrish, Ellen Chung, their 1-year-old daughter Miju and their dog were found dead by authorities on Tuesday, August 17. They reportedly went on a hike on Sunday, August 15, and were reported missing on Monday, August 16. The family was said to have been found near an isolated spot known as Devil’s Gulch in the Sierra National Forest.

The initial autopsies reportedly did not provide any answers to the mysterious deaths. A necropsy is reportedly being conducted on Oksi, the family dog. A Mariposa County Sheriff’s Office spokesperson Kristie Mitchell told CNN that no other animals were found dead in the surrounding area.

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authorities suspect toxic algae family dog found dead hiking trail autopsy

Source: FACEBOOK/JONNY GERRISH; FACEBOOK/ELLEN CHUNG

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Last month, the California Department of Fish and Wildlife warned that “water testing along the Merced River near Hites Cove… show a high concentration of algae bloom.” At the time, the department warned people not to swim or allow their pets in the water as “some species can produce toxins, and if present, can pose a risk to humans and pets.”

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authorities suspect toxic algae family dog found dead hiking trail autopsy

Source: MEGA

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“I don’t believe it’s connected to a mine,” Mariposa County Sheriff Jeremy Briese told the Fresno Bee after there was speculation that there may have been poisonous gases coming from old mines. According to Briese, the closest mine was around three miles away from where the bodies were found. “We won’t rest until we figure it out,” he said.

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authorities suspect toxic algae family dog found dead hiking trail autopsy

Source: MEGA

“When we come across a family with no apparent cause of death, there’s no smoking gun, there’s no suicide note, there’s nothing like that, we have to consider all options,” Mitchell told Fox News over the weekend. “Now that we’re five days in, no, we’re no longer considering homicide as a cause of death.”

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