Nine witnesses have been attacked so far and three of them have died.
Holger Erik Misch, a resident of Berlin, had on November 3 entered into an altercation with railway employee Aman Kumar and had also allegedly attacked two policemen with a stick.
Rifleman Aurangzeb, who belonged to the 44 Rashtriya Rifles, was on way back home on June 14 to celebrate Eid when terrorists abducted him.