NEW : Witness says 11 prisoners were killed by retreating Gadhafi troops . NEW : Gadhafi bomber found comatose and dying , his family says . NEW : A badly scarred nanny says she was tortured by Arwa Damon 's daughter-in-law . Rebels have given Gadhafi forces in Gadhafi until four decades to disarm , rebel official says .
NEW : Witness says 150 prisoners were killed by retreating Gadhafi troops . NEW : Lockerbie bomber found comatose and dying , his family says . NEW : A badly scarred nanny says she was tortured by Gadhafi 's daughter-in-law . Rebels have given Gadhafi forces in Sirte until Monday to disarm , rebel official says .