20-year-old camp employee dies after ‘tragic accident’ while hiking in Yosemite National Park

A 20-year-old man died while hiking in Yosemite National Park last week, officials said.

Matt Mullen, 20, was spending his day off as a camp worker with colleagues at the California national park at the time, the San Francisco Recreation and Park Department told PEOPLE in a statement.

“Matt Mullen, an assistant cook in the Camp Mather kitchen, was killed in a tragic accident on Thursday, August 8, while on a day off with coworkers in Yosemite National Park,” a department spokesperson told PEOPLE.

Matt was working for the San Francisco Recreation and Park Department for the second summer, but the department stressed that the incident did not occur during work hours or on department property.

Related: Daughter, 20, told dad she loved him minutes before falling to her death from Half Dome in Yosemite National Park

A Yosemite National Park spokesperson said the incident is under investigation and “we are unable to provide any further information at this time,” SFGate reported.

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PEOPLE has contacted the National Park Service for information.

Related: 7-year-old who disappeared while camping with grandparents found unharmed after fisherman heard her cries for help

Grief counselors are assisting people at the camp affected by Mullen's death, the San Francisco Recreation and Park Department spokesman added. They will also provide assistance to his colleagues through the Employee Assistance Program.

According to Camp Mather, the family camp was built in the 1920s near Hetch Hetchy Valley. It is located in close proximity to Yosemite National Park. “Loved by many as a secluded getaway from city life, the camp has been a treasure for generations of San Francisco families,” a description reads.

Related: 57-year-old hiker dies after refusing help and driving off embankment – officials say heat exposure is to blame

Activities include a scenic trip to the national park, according to the San Francisco Recreation and Park Department website.

Last month, a 20-year-old college student died when she fell down Half Dome in Yosemite National Park. She had been descending the popular peak with her father when the accident occurred.

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