KATHMANDU, May 8: The Patan High Court has ruled that Tukucha, which has been buried underground in the Kamaladi and Hattisar areas of Kathmandu, is a river not a sewer. A Joint Bench of Judges, Mahesh Sharma Paudyal and Rajya Laxmi Bajracharya, also said that the state cannot interfere as the buildings and other structures developed over the Tukucha River are private properties.