PORTLAND, Ore. – When Susan Kuhnhausen returned home from work one day earlier this month, she encountered an intruder wielding a claw hammer. After a struggle, the 51-year-old nurse fended off her attacker by strangling him with her bare hands.

Neighbors praised the woman for her bravery, and investigators said they believed the dead man — Edward Dalton Haffey — was burglarizing Kuhnhausen’s home. But after an investigation, police now say the intruder Kuhnhausen strangled was apparently a hit man hired by her estranged husband — Michael James Kuhnhausen Sr. — to kill her.

An emergency room nurse who lives in a southeast Portland neighborhood, Susan Kuhnhausen arrived home on the evening of Sept. 6 to find Haffey coming at her with a claw hammer.

She was struck in the head and wrested the weapon away, but the struggle continued and Haffey bit the nurse, according to police. A large woman, she was eventually able to get the slight Haffey into a chokehold and police later found him dead in a hallway. An autopsy revealed the cause of death as strangulation.

Police say she acted in self-defense.