NEW DELHI: A day after Aam Aadmi Party chief Arvind Kejriwal apologised to former Punjab Revenue Minister Bikram Singh Majithia, partys Punjab chief Bhagwant Mann has resigned from his post. Confirming his resignation, he tweeted that he will continue to fight against the drug mafia and corruption in Punjab. I m resigning as a president of AAP Punjab but my fight against drug mafia and all kind of corruption in Punjab will continue as an Aam Aadmi of Punjab,he wrote. The Delhi Chief Minister had on Thursday settled the defamation case filed against him by the former Punjab revenue minister and said that he has learnt that the drug trade allegations were unfounded. In the recent past, I made certain statements and allegations against you regarding your alleged involvement in drug trade. These statements became a political issue. Now, Ive learnt that allegations are unfounded,the Delhi CM said in a statement.