(CORNELIUS, Ore.) — An Oregon community is “shaken to its core” after a mother and her three young children were found dead in an apparent isolated incident, authorities said.

Deputies responded to a home in Cornelius, about 25 miles outside of Portland, around 3 p.m. Tuesday after a 911 caller reported finding four people dead, according to the Washington County Sheriff’s Office-Cornelius Police.

In a building attached to the home, officers discovered the bodies of a 37-year-old woman and her three children, ages 2, 5 and 7, authorities said.

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No arrests have been made, sheriff’s office spokesperson Deputy David Huey told reporters.

Authorities said the deaths appear to be an isolated incident and they don’t believe there is a danger to the public.

Huey was visibly emotional at a media briefing, telling reporters, “This is pretty hard to talk about.”

“Our community has been shaken to its core,” Cornelius Police Chief Mitch Coley said in a statement, calling the deaths “an unthinkable tragedy.”

“While the investigation is still ongoing and details are limited, I want to acknowledge the heartbreak this brings to the families involved and our entire city,” Coley said. “This is a deeply emotional time for everyone: neighbors, friends, and the first responders who were called to the scene. I ask that we all come together with compassion and care.”

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