Investigators are looking for any evidence that may link Williford to Taft's murder.
Authorities say Williford sexually assaulted and beat 62-year-old Taft inside a home on Cartier Lane in the late night hours of March 5 or the early morning hours of March 6. Warrants show he was linked to the attack through DNA.
Taft was recovering from plastic surgery at the home when her sister found her unconscious. She died a few days later at WakeMed. An autopsy released last week showed a blow to the head as the cause of death.
Williford is charged with her rape and murder.