IMPHAL, Aug 4: The students and women folks of Singjamei Chingamakha today held sit-in-protest condemning the Sangakpham blast which killed four civilians including two school children at Chingamakha community hall today. Speaking to media persons, president of Chingamakha Apunba Lamjing Lup, Soraisham Sana stated that both the central and state governments should take up strict action against the NSCN (IM) which is behind the gruesome blast. The authorities concerned should brand them as ‘terrorists’ and ensure peace and tranquility in the state by taking stringent security measures, she asserted.