Video from the train showed the unprovoked attack as the victim was stabbed up to 20 times

A 25-year-old man has been charged with murder after police say he stabbed a woman to death on an Atlanta commuter train.

Video from the train showed the unprovoked attack as the victim was stabbed up to 20 times

John Elijah Matthews was taken into custody at noon on Saturday, shortly after stabbing Margaret Swan at the Oakland City Station in Atlanta.

The family of Margaret Swan, a woman, 66, who was stabbed to death on an Atlanta MARTA train by John Elijah Matthews, has said that her death was preventable.