Nagaland, Arunachal Pradesh, Meghalaya and Mizoram are encroaching on a combined area of 85,446.42 hectares of Assam, the break-up being Nagaland
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/85446-ha-state-land-encroached
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/assam-tribune-guwahati
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nagaland
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/arunachal
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/meghalaya
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mizoram
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/land-encroachments
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/assam