The sexual assault trial of comedian Bill Cosby concluded with a hung jury on Saturday, NBC News reports. 

Montgomery County Judge Steven O'Neill declared the mistrial after the jury failed to reach a verdict following more than 50 hours of deliberations. AP/Matt Rourke - apimages.com

The 79-year-old-Cosby has been accused of sexual assault or harassment by more than 50 women dating back to the 1960s.

The long-standing allegations reemerged in 2014 in response to a viral comedy routine by Hannibal Buress, in which he said that Cosby was “a rapist” who shouldn’t talk down to the black community.

The ensuing flurry of accusers forced Cosby to cancel part of his “Far From Finished” comedy tour and subsequently defend himself in the press with the help of several surrogates and lawyers.

During the legal battle, a 2005 deposition was made public in which Cosby admitted to obtaining a sedative-hypnotic drug known as Quaaludes to give to women he hoped to have sex with. His attorneys at the time told him not to admit whether he had given these drugs to any women without their knowledge.

Cosby, who has performed comedy for several decades, is best known for his role on his titular TV comedy, “The Cosby Show” in the 1980s.