Amid the legal tussle between Delhi Chief Minister Arvind Kejriwal and Enforcement Directorate (ED) over the multiple summonses in Delhi liquor policy case, the central agency has now asked the AAP leader to appear for questioning in another case. Mr Kejriwal has been summoned in a money laundering case linked to alleged irregularities in Delhi Jal Board. Set up in 1998, the Delhi Jal Board is responsible for distributing drinking water across the national capital. Also called DJB, the board treats water from sources such as Yamuna river and Bhakra Dam and canals near Delhi. It is also responsible for collecting and disposing sewage from areas under New Delhi Municipal Council and Delhi Cantonment.