Atlanta train stabbing suspect faces new federal charge over great-grandmother's deadly attack

A Georgia man charged with killing a 66-year-old great-grandmother on an Atlanta MARTA train faces a new federal charge as authorities consider seeking the death penalty in the case. The suspect, who was previously accused of stabbing his great-grandmother to death in an unprovoked attack, is now facing an additional charge of using a deadly weapon during a crime of violence. Feds are weighing whether to pursue the death penalty for the 33-year-old man, who has been held without bail since his arrest. The suspect's case has sparked widespread outrage and shock among the community.