Oscar Arias Sanchez, Costa Rica’s Nobel Prize-winning former president, has been hit with allegations of sexual assault — from a woman who says she was inspired by the #MeToo movement to speak out against the powerful figure, according to new reports.

Alexandra Arce von Herold, a psychiatrist and anti-nuclear activist, on Monday filed a criminal complaint against Arias, alleging he molested her at his home in November 2014 — touching her breast and penetrating her with his fingers.

“He grabbed me from behind and touched my breasts. I said no and that he was married. That was my no. It was the only thing that occurred to tell him. I had met the wife,” she said in her complaint to federal prosecutors, according to newspaper Semanario Universidad.

“I really didn’t know what to do and thought this was the only line of defense that I could have. And when he didn’t react to that I didn’t know what to say, because I was scared that if I rejected him, he would no longer collaborate with us,” she continued.

“I don’t remember well how he responded but he kept touching me, he put his fingers in my vagina and he touched me all over and kissed me.”

Arce, who was 30 at the time and at the 74-year-old’s home to discuss an upcoming event, told the New York Times she made an excuse to leave and rushed out.

In her complaint, Arce says she subsequently told 15 people about her experience, including her brother, who told the Times she was badly shaken.

“She didn’t go into details about what exactly happened, and we didn’t ask her,” Manuel Arce told the paper. “For the first weeks afterward, it was like she had PTSD. She didn’t feel safe.”

Another anti-nuclear activist confirmed to Semanario Universidad that she told him about the alleged assault at a conference later that month.

“I noticed that it was a very disturbing experience for her, that she felt surprised and disappointed because he is a Nobel Prize [winner] and he violated the trust she had in him,” Martin Hinrichs told the Costa Rican outlet.

Arce told the Times she is finally coming forward with her story four years later after being inspired by the #MeToo movement — and seeing other women make accusations against powerful men like Harvey Weinstein, Bill Cosby and former USA Gymnastics doctor Larry Nassar.

“All the other women, that did, that helped me,” she told the paper. “So I thought maybe, maybe, I can help other people too.”

Arias, who did not respond to the Times’ requests for comment, was the president of Costa Rica from 1986 to 1990 and again from 2006 to 2010.

He received the Nobel Peace Prize in 1987 for his work to end civil wars in Central America.