IMPHAL: Deputy chief minister Gaikhangam demanded public apology from the BJP for its reference to the people of the north east as immigrants in vision document released in connection with the Delhi assembly elections. He said the BJP should apologise to the people instead of saying it was a printing mistake. Speaking to the media at Congress Bhawan, Gaikhangam said the state has earlier witnessed civil unrest due to a mistake committed by the BJP. He said this time also the party's mistake could have provoked the people. The Deputy Chief Minister also said the govt is making all possible efforts to introduce inner line permit system in Manipur. He said the govt wishes to introduce and discuss the bill on inner line permit in the next assembly session.