The Maharashtra Anti-Terrorism Squad today arrested an employee of the Hindustan Aeronautics Limited (HAL) for allegedly supplying secret information of fighter aircraft to Pakistan's Inter-Services Intelligence (ISI) agency. "The Nashik unit of the state Anti-Terrorism Squad (ATS) received reliable intelligence about the man, who was in constant touch with ISI. The man, identified as Deepak Shirsath, was supplying confidential information about Indian fighter aircraft and their manufacturing unit to the Pakistani spy agency through WhatsApp and social media," DCP Vinay Rathod said.