An Uttar Pradesh ATS officer has said that arrested DRDO employee Nishant Aggarwal, despite being engaged in "highly sensitive work", was "casual" on the internet and made himself an "easy target". Nishant, who worked on the nuclear-capable BrahMos missile systems, was in touch with suspected Pakistani ISI operatives through two Facebook accounts Neha Sharma and Pooja Ranjan, the official added.