The jury in Bill Cosby's trial are deadlocked after more than 30 hours of deliberations.

A judge in Pennsylvania has ordered them to resume their consideration of Andrea Constand's sexual assault accusations against the entertainer.

CNN correspondent Jean Casarez said the jury has gone back to the judge a number of times to ask questions.

She told Rachel Smalley they wanted Andrea Constand's testimony and that of the police officer who got the initial report again, as well as Bill Cosby's statement to police.

"Because this is a 12 year old case, they aren't any forensics. They've got to look at the credibility of these two people. Somebody is telling the truth and somebody is not telling the truth."

LISTEN ABOVE AS JEAN CASAREZ SPEAKS WITH RACHAEL SMALLEY