Cinthia Cruz-Alcantara, 18, was found dead in her apartment in the 6400 block of York Meadows on Wednesday. Officials said she was shot to death.
A friend named Archie Morning, who had been living with the victim and her boyfriend, was also shot.
At last check, Morning remained at Ben Taub General Hospital in critical condition.
Investigators identified three suspects, who are all charged with capital murder.
Andre Smith, 20, was arrested around 7pm Friday; Bryan Shackerford, 20, was arrested at around 7:30am Saturday; and Antwoine Smith, 21, is also in custody.