(CBS/AP) UPPER MARLBORO, Md. - A man dubbed as the "mother-daughter killer" after killing five women in Prince George's County and who was convicted in a series of home invasions entered an Alford plea on Wednesday in the slayings of a nurse and her daughter, according to CBS affiliate WUSA.
Jason Scott, 30, was immediately sentenced to 85 years in prison in the strangulations of 42-year-old Delores Dewitt and her 20-year-old daughter, Ebony, in March 2009.
With an Alford plea, a defendant doesn't admit guilt but acknowledges that prosecutors have enough evidence to convict him.
In exchange for the plea, prosecutors dropped charges in three other killings: the January 2009 shooting deaths of Karen Lofton, 45, and her daughter, 16-year-old Karissa; and the June 2008 killing of Vilma Butler, 46, who was fatally shot before her Bowie home was set on fire.
WUSA reports Scott used his part time job at a UPS facility to access records of and identify victims.
State's Attorney Angela Alsobrooks says she wanted to spare the victims' families the ordeal of several trials.
"We have removed, we believe, a ruthless killer from the streets," Alsobrooks said.
Scott was reportedly caught after a federal informant purchased a gun from him, resulting in a search warrant that uncovered evidence in his numerous crimes.
He was sentenced in January 2012 to 100 years in prison for dozens of armed home invasions and burglaries in Maryland.
Families of the victims did not comment on Scott's sentence on Wednesday, according to the station.