NewsLive incidentally is owned by Riniki Bhuyan Sarma, wife of former Assam health minister Himanta Sarma.
Shot nine times, by four men, 16-year-old Priya Basumatary lay bleeding for 24 hours before her body was removed.
The Assam State Commission for Protection of Child Rights has decided to register a case.
Dwimuguri is a forest village under Runikhata police station close to the international border with Bhutan.
The four missing persons have been identified as – Bakar Ali, Saddam Ali, Ataur Rahman and Rahul Amin.
The Assam Police team were in three vehicles and a tractor. Hussain suffered two bullet injuries on his head and one on his leg.
Bandhs cripple life; militants open fire on forces in Chirang.
Assam killings: One more killed, toll reaches 8
The official said the incident could be in retaliation to the death of an NDFB(S) cadre in Gossaigaon
The anti-talks faction of National Democratic Front of Boroland,headed by founder chairman Ranjan Daimary
A group of militants of the GNLA and NDFB were taking shelter at a Garo basti near Mendipathar.
Union Home Minister P Chidambaram said the Centre has directed the security forces to deal firmly with the anti-talk faction of the National Democratic Front of Bodoland.
The blasts were reported to be the handiwork of the anti-talks faction of the National Democratic Front of Bodoland (NDFB).
The Opposition in the Assam Assembly hit out at the Congress-led government of Tarun Gogoi for the serial attacks.
The NDFB warned the Centre and the Assam govt of retaliation if killings of its cadres continued.