The proscribed ULFA on Saturday admitted that it was a mistake on its part to have killed 10 schoolchildren in Dhemaji district in 2004 and social worker Sanjoy Ghosh in 1997.
ULFA 'foreign secretary' Sasadhar Choudhury told reporters that the Dhemaji incident and the killing of rural development activist Ghosh were "mistakes on the part of the ULFA".
On Independence Day of 2004, ULFA cadres triggered a blast in the parade ground in upper Assam's Dhemaji district killing 17 people, including 10 schoolchildren.
Ghosh of NGO AVARD-NE, along with a colleague of his, were kidnapped by ULFA on July 4, 1997 from the river island of Majuli where they were working for community health and development.
His colleague managed to escape but Ghosh was killed.
Asked why the group indulged in killing of innocent people, Choudhury shot back, "Why did our armed struggle begin? You have to go back to the prevailing situation in the state in 1979 when ULFA was born."