Locally-made bamboo alters and notes labelling trees as ‘kalp vrikhsa’ or holy tree, along with a message not to litter around the tree, have been found in the vicinity of the Indira Gandhi Park here recently. There is also a photo of a Hindu deity on top of the sign board. The capital district administration and the Itanagar Municipal Council have begun the cleaning up process, while the police also recently carried out patrols to keep a check on unlawful activities.