Anti-Corruption Branch (ACB) has issued notice to former Delhi Chief Minister Sheila Dikshit asking her to join the investigation in connection with the alleged 400 crore rupees water tanker scam. <br/><br/>ACB Chief MK Meena today said notices have been sent to Sheila Dixit and some Delhi Jal Board officials. <br/><br/>He said they shall be questioned on 26th of this month.<br/><br/>The ACB had received two complaints in the alleged scam. Complaints included name of Ms Dikshit and Delhi Chief Minister Arvind Kejriwal.