The firing started after a trivial fight over seat in the local. A group of four guys shot a man Tarbez and later fled from the scene.
Tarbez who is in critical condition was first admitted in Aggarwal Hospital in Mulund, but later shifted to Sion Hospital.
Mumbai local trains have become a serious threat for not just such incidents, but also for women. Physical assault of women in the trains is very common and is reported by media time to time.