The Time's Up campaign is taking aim at R. Kelly over allegations he has sexually abused women. The organization devoted to helping women in the aftermath of sexual abuse issued a statement Monday urging further investigation into Kelly's behavior, which has come under closer scrutiny over the last year as women have come forward to accuse him of everything from sexual coercion to physical abuse. Kelly has denied such charges. "We demand appropriate investigations and inquiries into the allegations of R. Kelly's abuse made by women and their families for more than two decades now. And we declare with great vigilance and a united voice to anyone who wants to silence us — their time is up," the statement said.

The statement was issued by the Women of Color committee within Time's Up, which includes Oscar-nominated director Ava DuVernay, TV mogul Shonda Rhimes and actress Jurnee Smollett-Bell. The social media campaign #MuteRKelly has sought to stop his music from being played and to cancel his concerts, and Time's Up said it is joining that call. Specifically, Time's Up is seeking action from RCA Records, Kelly's label; Spotify and Apple Music, which stream Kelly's catalog; and Ticketmaster, which has sold tickets to his concerts. And it is calling for the cancellation of a May 11 concert in Greensboro, N.C.

RCA, Spotify, Apple Music and Ticketmaster didn't immediately respond to email requests placed late Sunday night. The Time's Up letter was addressed to women of color. It started by saying, "We see you. We feel you. Because we are you." It continued: "For too long, our community has ignored our pain. The pain we bear is a burden that too many women of color have had to bear for centuries. The wounds run deep. As Women of Color within Time's Up, we recognize we have a responsibility to help right this wrong. We intend to shine a bright light on our WOC sisters in need."

Time's Up cited Bill Cosby's conviction last week for sexual assault as a step in the right direction but said it was "just a start." READ MORE How Bill Cosby's Appeal Could Become a #MeToo Test Case In a further statement to the Associated Press, Smollett-Bell said: "We stand linked with our sisters and will no longer tolerate the predatory behavior of R. Kelly to go unchecked. This is a call to action to #MuteRKelly. His music must be turned down and the voices of these brave survivors must be heard." Kelly has denied all allegations against him.

Later on Monday, he released a statement that called the move an "attempted public lynching of a black man who has made extraordinary contributions to our culture." In a statement to BuzzFeed News, Kelly's rep said, "R. Kelly supports the pro-women goals of the Time’s Up movement. We understand criticizing a famous artist is a good way to draw attention to those goals — and in this case, it is unjust and off-target." The statement continued: "We fully support the rights of women to be empowered to make their own choices. Time’s Up has neglected to speak with any of the women who welcome R. Kelly’s support, and it has rushed to judgment without the facts."

The statement added that he is a victim of a "greedy, conscious and malicious conspiracy to demean him." R. Kelly, whose hits include "Ignition," ''I Believe I Can Fly," ''Step in the Name of Love," ''Same Girl" and "Bump N' Grind," is one of pop music's best-selling artists. He has also written hits for artists ranging from Celine Dion to Michael Jackson to Lady Gaga. While he's written classic love songs and even gospel music, he is defined by sexually explicit songs such as "Feelin' on Yo Booty," ''Your Body's Calling Me," ''Sex Me" and even more explicit fare. He has long been accused of behavior that has ranged from questionable to criminal. He wed a 15-year-old Aaliyah in 1994. The late singer had been his protege, the marriage was later annulled and the two refused to confirm that it even happened.

He was later accused of child pornography after a widely circulated videotape appeared to show him having sex with, and urinating on, a teenage girl. He was acquitted of all charges in 2008 and continued to rack up hits and sell out stadiums around the country. In recent years, as more women have come forward to allege misconduct, protests against Kelly have increased. A woman told Rolling Stone last year that she was in a long-term relationship with the singer that was sexually and physically abusive. Parents claimed their daughter was being held by Kelly as part of a sex cult but their daughter, who was of age, denied their claims. And recently a woman in Dallas filed a lawsuit against the singer claiming he gave her a sexually transmitted disease, and she claimed he was grooming her to be a part of a sex cult.

Kelly hasn't released an album of new music since a 2016 Christmas album, and his last true album was 2015's The Buffet, which had no major hits. An appearance at a concert in his native Chicago scheduled for Friday was canceled. READ MORE R. Kelly Says He Is Not Convinced of Bill Cosby's Guilt Over Sexual Assault Allegations Read Time's Up's letter in full below:

To Our Fellow Women of Color: We see you. We hear you. Because we are you. For too long, our community has ignored our pain. The pain we bear is a burden that too many women of color have had to bear for centuries. The wounds run deep.

As Women of Color within TIME’S UP we recognize that we have a responsibility to help right this wrong. We intend to shine a bright light on our WOC sisters in need. It is our hope that we will never feel ignored or silenced ever again. The recent court decision against Bill Cosby is one step towards addressing these ills but it is just a start. We call on people everywhere to join with us to insist on a world in which women of all kinds can pursue their dreams free from sexual assault, abuse and predatory behavior. To this end, today we join an existing online campaign called #MuteRKelly.

Over the past 25 years, the man known publicly as R. Kelly has sold 60 million albums, toured the globe repeatedly, and accumulated hundreds of millions of plays on radio and streaming services. During this time, he also... • Married a girl under 18 years of age;

• Was sued by at least 4 women for sexual misconduct, statutory rape, aggravated assault, unlawful restraint, and furnishing illegal drugs to a minor;

• Was indicted on 21 counts of child pornography;

• Has faced allegations of sexual abuse and imprisonment of women under threats of violence and familial harm;

Together, we call on the following corporations and venues with ties to R. Kelly to join us and insist on safety and dignity for women of all kinds: • RCA Records - The venerable music label currently produces and distributes R. Kelly’s music;

• Ticketmaster - The popular ticketing system is currently issuing tickets for R. Kelly’s show on May 11;

• Spotify and Apple Music - The popular streaming platforms currently monetizing R. Kelly’s music;

• Greensboro Coliseum Complex - The venue is currently hosting an R. Kelly concert on May 11. The scars of history make certain that we are not interested in persecuting anyone without just cause. With that said, we demand appropriate investigations and inquiries into the allegations of R. Kelly’s abuse made by women of color and their families for over two decades now. And we declare with great vigilance and a united voice to anyone who wants to silence us - their time is up.