No one involved in this story has been named by the police.
The alleged killer probably fits into one of three categories:
1. Mexican immigrant, possibly dealing drugs for one of the cartels. Beheadings are common in Mexico.
2. Muslim immigrant. ISIS teaches beheadings to jihadists.
3. Someone on bath salts or otherwise mentally disturbed.
A man is reportedly in custody after walking into a US supermarket covered in blood, holding a knife and what looked like a human head, and stabbing a worker.
Police responded to a call about the attack at the Harvest Market Thriftway in Estacada, Oregon, at around 2.15pm on Sunday.
Other staff reportedly held the knifeman down until police arrived.
The store worker was airlifted to Emanuel Hospital for treatment.
The suspect was also taken to a nearby hospital.
Within minutes of the report of the supermarket attack, officers were called to Elwood Road, Colton, around 10 miles away, where a woman was found dead inside a home.
Police are investigating both incidents which investigators say are connected, according to reports.
This is a developing story. More later as events warrant.