Bandipur Tiger Reserve in Karnataka has used a drone or unmanned aerial vehicle (UAV) to spot forest fire.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/bandipur-tiger-reserve-uses-drone-spot-forest-fire
[2] http://admin.indiaenvironmentportal.org.in/category/author/kestur-vasuki
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/pioneer-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/karnataka
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bandipur-np
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tiger
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tiger-reserves
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tiger-conservation
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/forest-fires
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wildlife