Lincolnshire Police have named the victims of the double murder in Branston.
While formal identification has yet to take place, the victims are believed to be 51-year-old Premm Monti, originally from Romania, and 71-year-old Robert Tully, originally from the United States.
Their families have been informed, detectives said.
On Wednesday police charged a 22-year-old man with two counts of murder after the bodies of the man and woman were found at the bungalow in Branston on Monday.
Andrei-Mihai Simion-Munteanu, of Lincoln Road, Branston, is due to appear at Lincoln Magistrates’ Court on Thursday, August 8.
According to the Daily Mail, neighbours said Dr Monti, also known as Leela, a former NHS trust staff governor, had not been seen for several days. One neighbour reported hearing a gunshot on Monday morning, hours before the bodies were discovered.
The Times also reported that Dr Monti was a mother of three from Romania, who ran a care and medical business from the property she was renting.
Lincolnshire Police described the case as “an isolated incident”.