Upset over Aam Aadmi Party chief Arvind Kejriwal's apology to Akali Dal's Bikram Singh Majithia for calling him "Punjab's drug lord", the party's Bhagwant Mann has quit as AAP's Punjab chief this morning. "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," Mr Mann tweeted this morning.