18 September, 2017
French authorities are not investigating the acid attack as an act of terrorism for the time being.
She said all four of the women, who are in their 20s, have been hospitalized, two of them for shock.
Boston College in MA said the female students were treated for burns at a Marseille hospital after they were sprayed in the face with acid on Sunday morning.
La Provence, a newspaper in Marseille, reported that police described the woman as mentally unstable and that she remained at the scene to show officers pictures of herself with burns.More news: Huskers fall to Ducks despite big second half
There was no immediate information on where the USA tourists are from.
In late August, the southern French port city of Marseille made global headlines when a van rammed into multiple bus stops, killing one person, in an act that authorities determined not to be terrorism.
In January 2016, a 15-year-old Turkish Kurd was arrested after attacking a Jewish teacher on a Marseille street.
French authorities are not treating the incident as terror-related.
"We are seeing some links - although it has to be treated with caution because it's a small data set - of a growing feature between named suspects in acid attacks who also feature in our gang matrix", Mackey said.