UPPER MARLBORO, Md., July 28 (UPI) -- A 27-year-old Maryland man indicted in the slayings of a mother and daughter also is suspected in at least three other killings, ABC reported Wednesday.
UPS worker Jason Thomas Scott is jailed after being indicted on seven counts Tuesday in Prince George's County in the March 2009 deaths of Delores Dewitt, 42, and Ebony Dewitt, 20, of Upper Marlboro, who were found in a burning car.
ABC News reported Wednesday law enforcement sources said investigators also think Scott, who lived in the vicinity, shot and killed another mother-daughter pair, Karen Lofton, 45, and Karissa Lofton, 16, in their home in January 2009.
The Dewitts were found in their car less than a mile from the Loftons' home. It wasn't known whether the Dewitts also had been shot.
Authorities suspect Scott also killed Vilma Artis Butler, found dead in her burning home in Bowie, Md., in June 2008. ABC said some police suspect unsolved deaths in the District of Columbia, Texas and Florida also could be his victims.
Scott allegedly used his computer skills and possibly his UPS database to research potential targets, ABC said. Sources told the network police found material on Scott's computer indicating he was researching police investigative tactics and forensic capabilities.
"We don't have any evidence this is a serial killer but the coincidences between these cases are very strong," a police officer said after the discovery of the Dewitts' bodies.
Scott, who has a long criminal record, was arrested in July 2009 on charges he was selling stolen guns. Investigators searched an old mansion used by thieves and allegedly found evidence linking Scott to the slayings of the Loftons and Dewitts.
An FBI profiler said the cases probably were not linked, however, ABC said.