Newly unsealed court documents show why officials think a Portland-area homicide suspect also killed in Washington.

Newly unsealed court documents show why officials think a Portland-area homicide suspect also killed in Washington.

At the request of KGW ( http://is.gd/rsYoTf), a Clackamas County judge unsealed search warrants for Erik Meiser.

The 38-year-old is undergoing a mental evaluation at Oregon State Hospital for his aggravated murder charge in the September death of Fritz Hayes. Hayes was killed with a machete after he discovered a burglar at his Lake Oswego home.

The search warrant information says after his arrest Meiser told investigators he stabbed a man in a tent last summer at a campsite along the Cowlitz River at Kelso. The search warrant says DNA tests on bloody evidence links that killing to the machete.

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Meiser has not been charged yet in the death of the camper, Nick Flickett.

Information from: KGW-TV, http://www.kgw.com/