MIDWEST CITY, Oklahoma -- Midwest City police are investigating the city's second homicide of the year.

Police got a call that a man wearing only jeans with blood all over him was walking around an apartment complex obviously distressed.

When they officers arrived, they found Eric Knox, 28, at the Willow Creek Apartments. Officers arrested Knox after he told them he murdered someone, saying he called her the devil

When police entered Knox's apartment, they found a 24-year-old woman dead. Her name has not yet been released.

Knox has no previous criminal history.

"Any homicide is a tragedy, especially this time of year," said Chief Brandon Clabes. "At this point, we don't know what the motive was other than it appears to be a case of domestic violence."