Guwahati, April 8 -- Security has been stepped up across sensitive areas in Manipur following a fatal blast in Bishnupur district, even as authorities said investigations are under way to establish the involvement of recently arrested suspects.

Addressing a press conference at the Chief Minister's Secretariat, BJP Manipur Pradesh spokesperson Kh. Ibomcha said coordinated efforts are in progress to identify and apprehend those responsible for the April 7 attack in Tronglaobi that killed two toddlers and injured their mother.

He said the government has initiated high-level reviews and large-scale joint operations involving state and central security forces in response to the incident. During a combing operation in Churachandpur district, ...