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Update 3, February 22: The third suspect, Brandon Green, has been arrested in Columbia.
Update 2, February 17: A second suspect, Ledarian Phillips, 20, has been arrested and a third suspect, Brandon Green of Summerville, 20, has been identified.
Update, February 16: A second suspect has been identified.
First reporting: One of three suspects, DeShawn Heyward, 20, has been arrested for a break-in and assault at a Sumter Street home, a crime that the victim's boyfriend saw the start of on a Skype video call.
I'll point you to ABC News 4's report.