by KYW's Tony Hanson
All four defendants have now pleaded guilty in a vicious crime spree which began with the robbery of a man last year in Philadelphia and ended with the gang rape of his sister.
Two defendants pleaded guilty earlier (see previous story), and the other two pleaded guilty on Monday.
Prosecutor Bill Davis says the defendants targeted a male victim for robbery last June but weren't satisfied with what they got.
The defendants threatened and tortured him until he led them to his sister's house, where they robbed her, then raped and sexually assaulted her over a period of hours.
According to Davis, the female victim pleaded with the attackers for the safety of her little daughter:
"She asked the individuals not to hurt her little daughter, not to even go into thebedroom where her daugther was sleeping. It was the middle of the night. They didn't bother with her daughter, they just sexually assaulted (the mother) in various places throughout the house."
Two of the defendants have agreed to 20- to 40-year sentences, while the judge will decide the penalty for the remaining defendants, who will be sentenced next month.