Following his Golden Globes win for The Disaster Artist on Sunday, James Franco was accused on social media of sexual misconduct. After Franco wore a pin pledging support to the Time’s Up movement at the awards show, actress Violet Paley alleged that he once pushed her head down toward his exposed penis in a car. She also claimed that Franco invited her friend, then 17, to his hotel room. Paley said she received an “overdue, annoyed, convenient phone ‘apology’” from Franco. Another actress, Sarah Tither-Kaplan, accused Franco of exploiting her in a film. She said she was asked to do full nudity, adding, “I one hundred percent did not feel like I had a choice to say no.”

On tonight’s episode of “The Late Show,” Stephen Colbert asked Franco if he had a response to the allegations. After Franco reiterated that he supports the Time’s Up campaign, he said that he hadn’t read the tweets but “heard about them.” He added, “The things that I heard that went on Twitter are not accurate, but I completely support people coming out and being able to have a voice because they didn’t have a voice for so long. I don’t want to shut them down in any way. I think it’s a good thing and I support it.”

He also expressed confusion about some tweets from the actress Ally Sheedy. The two worked together on an off-Broadway play in 2014. “Please never ask me why I left the film/tv business,” she wrote in a since-deleted tweet thread accompanied by the #MeToo hashtag. “I have no idea what I did to Ally Sheedy,” Franco told Colbert. “I have no idea why she was upset. I can’t speak for her. I don’t know.”

Franco was scheduled to appear at a New York Times TimesTalk on Wednesday, but the event was canceled by the publication over the allegations. “Given the controversy surrounding recent allegations, we’re no longer comfortable proceeding in that vein,” the publication said in a statement.

The new allegations regarding Franco follow a 2014 story where Franco tried to arrange a meet up with a 17-year-old. He then went on daytime television and opened up about the incident. “Social media is tricky,” he said.