Emergency responders treated the wounded woman at the station, but she died from her injuries. She has not yet been named.
MARTA police said several horrified passengers witnessed the crime.
‘This appears to be a senseless act of violence, and our thoughts are with the victim’s loved ones and those who witnessed this horrific incident,’ the department said.
‘We understand the concern and fear incidents like this can cause for those who ride and work on the MARTA system.
MARTA Police are actively investigating and remain committed to the safety and security of our riders and employees.’