About 30 minutes later, a 911 call reported that a woman was dead inside a home, which was 10 miles from the store, according to KGW. She was later identified as Webb's mother, 59-year-old Tina Marie Webb, the Oregonian reported. Investigators believe Joshua Webb decapitated his mother, the Oregonian reported.
Employees tackled the man and held him until police arrived, according to the New York Daily News.
The investigation is ongoing, but authorities said there is no threat to the community at this time, KPTV reported.