The Linköping District Court convicted the man for aggravated rape, assault, and unlawful deprivation of liberty and was also ordered to pay the girls a total of 445,000 kronor ($56,000) in damages.
The man had previously been convicted for aggravated rape and sexually abusing a child, but was released from prison in January 2008 after serving four and a half years of a seven year sentence.
The new conviction stems from an incident which took place in early March 2009 when the 30-year-old man and his girlfriend convinced the two 17-year-old girls go join them on a car trip from Hultsfred to Linköping.
The 30-year-old lured the two teenagers into the car by claiming that his girlfriend, who was also friends with the girls, was ill.
Not long into the journey, the man pulled a knife on his passengers, locked the doors and threw all mobile telephones out of the car, warning:
“If everyone just obeys this will go fine. Follow my instructions and you will live,” according to court papers.
The two girls were then forced to sit on the floor of the car in silence.
The 30-year-old also bound and assaulted his girlfriend, who stayed in the car out of fear for reprisals, while her boyfriend pulled over in desolate areas on several occasions to rape and beat her two friends.
In the early 1990s, the man had also been sentenced to court ordered psychiatric care for assault.
However, the court determined he wasn’t suffering from any serious mental illnesses at the time he committed the crimes for which he has now been sentenced.