June 1 (UPI) -- Matthew Brown, reality TV star of Alaskan Bush People, has died, authorities confirmed. He was 42.

His body was located Saturday by a group of citizens conducting a search along the Okanogan River in Washington State, the Okanogan County Sheriff's Office said Sunday in a statement.

The cause and manner of death is to be determined by the coroner's office, it said.

Noah Brown, one of Matthew Brown's younger brothers, said in a late Sunday post to Instagram that he was among those searching for his eldest brother. He said Matthew Brown's body was found at 3:27 p.m. and that he identified the remains.

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