An Alabama woman says GOP Senate candidate Roy Moore sexually assaulted her when she was 16, attacking her in a car and then warning her that “no one will believe you” if she tried to report him.

Moore now stands accused of engaging in sexually inappropriate behavior with five different teenage girls when he was an assistant district attorney in his 30s. The women, four of whom spoke on record to the Washington Post, say they were between 14 and 18 years old when Moore approached them.

In a press briefing Monday with lawyer Gloria Allred by her side, Beverly Young-Nelson said she was 16 when Moore offered to drive her home one night from a restaurant where she worked. But once in the car, she says, he began groping her and trying to take her shirt off.

“I tried to open my car door to leave, but he reached over and locked it so I could not get out. I tried fighting him off, while yelling at him to stop, but instead of stopping, he began squeezing my neck attempting to force my head onto his crotch,” Young-Nelson said. “I was terrified. He was also trying to pull my shirt off. I thought that he was going to rape me. I was twisting and struggling and begging him to stop. I had tears running down my face.”

Finally, Young-Nelson said, he stopped and allowed her to exit the car before driving off, leaving her “laying on the cold concrete” of a parking lot. But first, she said, he delivered a warning.

“He looked at me and said, ‘You are a child. I am the District Attorney of Etiwah County. If you tell anyone about this, no one will believe you,’” she said.

Moore also highlighted his position of power in Young-Nelson’s high school yearbook, which she both showed reporters and read aloud.

“To a sweet more beautiful girl, I could not say “Merry Christmas,” the inscription reads. “Love, Roy Moore D.A.”

The decision to come forward was not politically motivated, Allred said, highlighting the fact that Young-Nelson and her husband were Trump supporters.

Republican lawmakers have come out in droves calling for Moore, now 70, to drop out of the Alabama special election for Jeff Sessions’ Senate seat. Senate Majority Leader Mitch McConnell — who had previously withheld judgment on whether the allegations were true — said Monday that he “believes the women,” and that Moore should “step aside.” Sen. Susan Collins of Maine also tweeted Monday that she “did not find Moore’s denials to be convincing” and asked him to withdraw.