Lea Michele has been accused of making a former Glee co-star’s experience on the show a “living hell”.

Actress Samantha Ware, who starred as Jane Hayward in the US musical comedy-drama, said Michele threatened to “s*** in her wig” and made her “question a career in Hollywood”.

She made the allegations after Michele voiced her support for the Black Lives Matter movement following the death of George Floyd – a 46-year-old black American man who died after a white police officer kneeled on his neck for several minutes during an arrest in Minneapolis, Minnesota.

“George Floyd did not deserve this,” Michele tweeted.

“This was not an isolated incident and it must end.”

Ware retweeted the post and told fans about her behind-the-scenes experiences with the actress.

Ware, 28, wrote: ”Remember when you made my first television gig a living hell?!?!…

“Cause I’ll never forget… I believe you told everyone that if you had the opportunity you would ‘s*** in my wig!’ amongst other traumatic microaggressions that made me question a career in Hollywood.”

Michele, who is pregnant with her first child with her husband, businessman Zandy Reich, 37, has not responded to Ware’s accusations.

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Michele, 33, played the role of Rachel Berry for six seasons of the Fox series, and was nominated for an Emmy, two Golden Globes and three Grammy awards for the part.

Ware, who appeared in the sixth season of Glee in 2015, has since starred on shows including What/If, Chicago Med, and God Friended Me.

Sky News has contacted Michele’s representatives for comment.