Andrey Yezhov, a 53-year-old Russian, was arrested after an 88-year-old woman was found dead in her home in the city of Kashira, 67 miles south of Russia's capital Moscow.
Her body showed signs of having been s*xually assaulted, according to reports.
In a harrowing interview with police, Yezhov explains how he broke into the pensioner's home before strangling her.
He then admitted stealing her TV, before throwing her passport into a grassy area and returning home.
In the footage, he goes on to tell officers: "I confess to the multiple murder and r*pe of women during the last 10 years."
According to local media, Yezhov was arrested after investigators checked CCTV footage.
He is now a suspect in two other murders and the r*pe of a 10-year-old girl after his DNA was linked to other crimes in the area.
The child, who survived the attack, was r*ped in her home in the early hours at around 2am one morning in January.
Reports say the victim attends the children’s centre where the suspect’s wife works as a psychologist, and investigators are working to see if she was linked to the crime.
Yezhov is also suspected of having r*ped and murdered a woman in her home in 2013.
The plumber is accused of r*ping another woman in a forest in 2015 before strangling her to death as well.
He is currently being held in a pre-trial detention centre.
Investigations are continuing.
