Actress Salma Hayek has claimed Harvey Weinstein repeatedly sexually harassed her and at one point threatened to kill her.
Writing in the New York Times, she said the disgraced Hollywood producer would arrive at her hotel room during the night asking to shower with her, receive a massage or let him perform a sex act on her.
She alleged that at one point he told her: "I will kill you, don't think I can't."
In the latest of a series of allegations against Weinstein, she described him as a "monster", claiming she was persistently harassed by him while filming the Frida Kahlo biopic Frida.
Weinstein, 65, has "unequivocally denied" all allegations of non-consensual sex through a representative.
In the article, Hayek, 51, wrote: "Harvey Weinstein was a passionate cinephile, a risk taker, a patron of talent in film, a loving father and a monster.
"For years, he was my monster."
Hayek said she had been thrilled when Weinstein agreed to pay for the rights of the work she had developed for the film Frida, writing: "He had taken a chance on me - a nobody. He had said yes.
"Little did I know it would become my turn to say no.
"No to opening the door to him at all hours of the night, hotel after hotel, location after location, where he would show up unexpectedly, including one location where I was doing a movie he wasn't even involved with.
"No to me taking a shower with him.
"No to letting him watch me take a shower.
"No to letting him give me a massage.
"No to letting a naked friend of his give me a massage.
"No to letting him give me oral sex.
"No to my getting naked with another woman.”
Hayek went on to claim Weinstein threatened to shut down production on Frida unless she agreed to a sex scene with Ashley Judd.
Weinstein is being investigated by police in London and the US over allegations of rape, sexual assault and harassment, all of which he denies.