Atlanta, GA - A woman says a stranger attacked her with a skateboard on MARTA.A week later MARTA police arrested Laquai Barrett and charged him with aggravated assault and criminal trespass.Artz learned from open records that Barrett had been banned from MARTA at the time of the attack for not paying.In a statement released Monday MARTA said, "While such crimes are comparatively rare on MARTA, we regret that one of our customers was injured during this unfortunate incident. MARTA police worked quickly to make an arrest in this case and we are taking positive steps, such as installing surveillance cameras in every rail car, to make our transit system even safer and more secure."