STF arrests Hamim Mondal (Left), Aditya Singh (Centre) and Arpital Sarkar (Right) in connection with a Bengal-based JeM module case. Photo: IBNS arrangementsThe latest arrest comes days after the STF apprehended Hamim Mondal and his associate Arpita Sarkar. Third arrest after Hamim Mondal, Arpita SarkarAccording to police sources, the STF arrested college student Aditya Singh from his residence after questioning Hamim Mondal and Arpita Sarkar during the ongoing investigation. Probe continuesKolkata Police Commissioner Ajay Nand said the city police officials were coordinating closely with the Bengal STF during the investigation. “We are closely working with the Bengal STF.