Elderly grandmother stabbed to death on Atlanta train in unprovoked daytime attack; she was stabbed 18 to 20 times: Officials

An elderly grandmother was stabbed to death on an Atlanta train over the weekend in an unprovoked, daytime attack, authorities said.Arrest warrants indicate that the 66-year-old victim was stabbed 18 to 20 times while aboard a MARTA train Saturday, WXIA-TV reported.'There was nothing she wouldn't do for her family because her family is her everything.'John Elijah Matthews, the 25-year-old suspect, first cut the throat of victim Margaret Swan just seconds after he walked next to where she was sea...