Two lawyers accused of defrauding their clients in a diet-drug settlement of $65 million were sent back to jail Thursday after a jury deadlocked and a federal judge declared a mistrial.

The jury had considered the case against suspended lawyers William Gallion and Shirley Cunningham Jr. for eight days, and twice in two days sent out notes indicating it was stumped. A third defendant, Melbourne Mills Jr., was acquitted last week. All faced a single charge of conspiracy to commit wire fraud.