New Delhi, June 22 -- The National Investigation Agency (NIA) has arrested another key accused in a CPI (Maoist) Northern Region Bureau (NRB) terror revival conspiracy case from Delhi, the probe agency said on Sunday.

NIA also seized devices including hard drives, pen drives and mobile phones, as well as other incriminating material during a search in the West Delhi house of the accused, identified as Vishal Singh, originally hailing from Mathura in Uttar Pradesh.

According to NIA, investigations have revealed that the accused, a member of the CPI (Maoist), had delivered a drone to leaders of the banned terror outfit in Chhakarbanda/Panchrukhiya forest area of Bihar to further its violent anti-national activities. He had imparted techni...