Authorities knocked on doors asking neighbors for any information that could help the case as they combed through yards near where the bodies were found Friday and Saturday in East Cleveland. They were also checking dilapidated houses in the area.
A 35-year-old registered sex offender was arrested after a police standoff Friday and is a suspect in the three deaths, East Cleveland Mayor Gary Norton said.
"He said some things that led us to believe that in some way, shape, or form, Sowell might be an influence," Norton told The Associated Press.
In the most recent case, one body was found Friday in a garage. Two others were found Saturday - one in a backyard and the other in the basement of a vacant house. The bodies, believed to be female, were found about 100 to 200 yards (90 to 180 meters) apart, and authorities believe the victims were killed in the last six to 10 days.
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"It's very scary, especially when he used to be talking to my daughter," said Nathenia Crosby, 48. "But I told him he was too old to be talking to my daughter because she was only 19. When I found out how old he was, I said, 'You need to move on, she's too young.' "
Sowell was found guilty in 2011 of killing 11 women and hiding their remains around his Cleveland home from June 2007 to July 2009. Police found their mostly nude bodies throughout the house after a woman escaped and said she had been raped there.