(AP) - An East Texas man has been sentenced to two life terms in prison for sexually assaulting two sisters last summer.

The Texarkana Gazette reports ( that the punishment against Jerry Wayne Johnson was enhanced because of seven prior felony convictions. A Bowie County jury issued the punishment Friday against the 50-year-old.

Johnson was a friend of the girls' mother. She had asked him to share an apartment so that Johnson could watch the girls, 12 and 14 at the time, while the mother was away working as a truck driver. He moved out shortly after the abuse occurred.

The girls testified that Johnson made inappropriate comments, bought them underwear and allowed them to smoke marijuana.

The younger girl in December told her mother of the abuse, and police were notified.