Three people have been charged in connection with the rape of a 14-year-old girl in Alabama after her 7-year-old sister alerted a neighbor who ended the assault.

Adults had allegedly plied the 14-year-old victim with booze, which rendered the girl “semi-conscious” during the attack, the Times Daily reports.

Police told that newspaper that the alleged rape occurred Wednesday night at the home of 51-year-old Melinda McNatt, an acquaintance of the child’s family, in Russellville, Alabama, about 100 miles northwest of Birmingham.

McNatt and her roommate, 37-year-old Amanda Grace Byrd, allegedly bought alcohol for the teen, police say.

Two men — Tony Grissom, 30, and his brother — also were at the residence.

When McNatt, Byrd and Grissom’s brother passed out and the 14-year-old girl became “semi-conscious,” Grissom allegedly took advantage of the girl and began raping her, police say.

The girl’s 7-year-old sister was on hand to witness the alleged assault. She unsuccessfully tried to alert McNatt and Byrd and then ran to a neighbor’s house for help and to call authorities.

When the neighbor intervened to stop the attack, Grissom and his brother left the home, Times Daily reports.

The 14-year-old girl was then taken to a hospital for medical care.

Investigators later returned to the home and found McNatt smoking meth, according to police.

As of Saturday, Grissom, McNatt and Byrd were being held in the Franklin County Jail.

Prosecutors have charged Grissom with first-degree rape, while McNatt and Byrd face charges of endangering the welfare of a child, contributing to the delinquency of a minor, unlawful possession of drug paraphernalia and unlawful possession of a controlled substance.

Franklin County Sheriff Shannon Oliver told the newspaper that the assault was a “senseless” crime.

“It’s a sad situation,” Oliver said. “There are really no words to describe this.”

Feature photo: Franklin County Sheriff’s Office