Following two attacks on rail commuters in a month, the Railway Protection Force (RPF) nabbed two members of a ‘fatka’ gang. This happened when the two were looking out for their next victim at the end of Parsik tunnel between Thane and Mumbra. The duo has been identified as Guddu Khan (26) and Imran Khan (26), both residents of Mumbra. They were held on December 1 at around 7.30 pm.