PATNA, Feb. 11 -- Senior Bihar Police officer Vikas Vaibhav, who had tweeted his "hurt" over the alleged misbehaviour by his superior at a meeting, has been issued a show cause notice and asked to reply within 24 hours why disciplinary action should not be taken against him, officials familiar with the matter said on Friday, even as chief minister Nitish Kumar expressed his displeasure about officials airing their grievances in public....