India, June 9 -- Former chief minister N Biren Singh and Bharatiya Janata Party (BJP) Rajya Sabha lawmaker Leishemba Sanajaoba left for New Delhi on Monday to brief central leaders on the escalating tensions in the ethnic violence-hit Manipur.

An influential Meitei outfit member's arrest over the weekend triggered the fresh violence that left at least 11 people injured and prompted authorities to reimpose restrictions, and governor Ajay Kumar Bhalla to conduct a security review.

Singh, who resigned as the chief minister in February after the Supreme Court directed a central forensics lab to examine leaked audio tapes allegedly featuring him purportedly saying the ethnic violence was instigated at his behest, declined to comment when ask...