Bill Cosby's rape case ended in a mistrial on Saturday after jurors failed to reach a unanimous decision on charges that he drugged and raped a woman, Andrea Constand, at his home in 2004.

The sequestered jury of five women and seven men spent more than 50 hours over six days reviewing testimony as they tried to reach a verdict, often working late into the night. But inside a packed courtroom outside Philadelphia on Saturday, jurors said they remained deadlocked.

All jurors agreed there was "hopeless deadlock that cannot be resolved on further deliberations."

Cosby attorney Brian McMonagle immediately moved for a mistrial, which was granted by the judge.

"A mistrial is just the justice system at work," Judge Steven T. O'Neill told the jurors. "Don't feel that you let the justice system or anyone down."

The 79-year-old comedian clutched his cane and sat with his eyes closed. Constand hugged her supporters and other Cosby accusers, some of who were crying.

Montgomery County District Attorney Kevin Steele immediately announced the prosecution would retry the case.

"We appreciate the efforts and the seriousness that the jury took to their role," Angela Agrusa, another Cosby attorney, told BuzzFeed News.