Three people whose bodies were found at a home in a Minnesota township all died from gunshot wounds, and a person of interest in the case was found dead at another location, authorities said.

The victims' bodies were found Sunday at Fish Lake Township after a family member reported not being able to contact them, the Chisago County Sheriff's Department said.

They were identified Tuesday as Darrell James Mattson, 73; Denise Lillian Mattson, 68; and 47-year-old Kirk Patrick Mattson.

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The medical examiner said all three suffered multiple gunshot wounds.

A person of interest was found dead at a separate location, the sheriff's department said.

No further information was released. Investigators believe the shooting was not a random incident.

Fish Lake Township is about 45 mile north of Minneapolis.