Three women were seriously injured in an acid attack on a Mumbai local on Friday night.
Mansi Shingarpure, Shirley Thomas and Sunita Prasanna were rushed to Baba Hospital in suburban Bandra.
Another passenger, Saifullah Rahmatullah, who suffered minor burns, was treated at Cooper Hospital.
No arrests have been made so far.
According to sources, the attackers boarded the train at Bandra.
All three injured women are employed with ICICI Bank at its Mahalaxmi branch.