A public health expert, Kishor had left his job with the United Nations in 2011 and joined a team of young professionals who worked on the Modi campaign for nearly three years. Many have credited him with being the architect of 'chai per charcha' and 3D hologram campaign which contributed significantly to Modi's election victory.

37-year-old Kishor along with some 60 other professionals had set up Citizens for Accountable Governance (CAG), initially to galvanise votes for PM Modi and later to address social issues. Kishor said on Wednesday he has taken a one-year "break" but did not specifically confirm that he would be working for the Bihar Chief Minister.

"The kind of work I do it is natural for people to approach," he added when asked if he would join Kumar's campaign team ahead of Bihar polls.

Latest News  from Bihar News Desk