The Anti-Corruption Branch has summoned Delhi Chief Minister Arvind Kejriwal's private secretary in connection with its probe in the alleged 400 crore rupees tanker scam. The anti-graft body had recorded sacked Delhi minister Kapil Mishra's detailed statement last week. <br/><br/>ACB chief Mukesh Kumar Meena said that private secretary to Kejriwal, Bibhav Kumar has been called for questioning on Wednesday in the case. Mr Meena said, Kaspil Mishra is also likely to be questioned again tomorrow. <br/><br/>He is currently hospitalised after he fainted during a press conference in which he revealed purported details of alleged financial irregularities committed by the Aam Aadmi Party for its donations. Mr Mishra has been on a hunger strike demanding details of Kejriwal and his team's foreign tours.