The Car Nicobar Sub Division is consisting of four Police Stations i.e. Car Nicobar, Nancowrie, Katchal and Teressa, one Look out post Tilongchoung at PS Nancowrie and one Out Post Chowra at PS Teressa.

Katchal Island is situated in Nicobar Group of islands and located at about 155 km South of Car Nicobar (District Headquarters).Its area is 174 sq. km and this Island comes under Nancowry Tehsil. Access to this pristine island is through helicopter and ship/vessels. For the purpose of transport there is one helipad situated at Mildera village and a marine jetty. One can avail of the helicopter facilities from Port Blair to Katchal via car Nicobar, Terresa and nancowry and vice versa on all days except Sunday. As far as, the shipping services are concerned M.V Campbell Bay, M.V Sentinel and M.V Chowra are plying to southern group of Islands for passengers and Cargo.
The total population under PS Katchal’s jurisdiction is around 2700; tribal and non-tribal population being around 1360 and 1340 respectively. The non-tribal population comprises Tamil, Telugu & Ranchi community people apart from 670 people who’re Srilankan Tamil settlers. The livelihood of tribal population depends on fishing and coconut plantation. The Non-tribal population is mainly engaged in rubber plantation works. Katchal Island was the worst effected island during 2004 Tsunami as many parts of the island got submerged and the beauty of pristine island was destroyed by the tsunami waves.
After the Tsunami, the Police Station has been shifted from Kapanga to Mildera and currently runs from a pre-fabricated structure. The jurisdiction of the Police Station extends over villages E-Wall, Meenakshi Ram Nagar, Japan Tikrey, Beach Dera and Upper Katchal. This Island is not open to tourists and a Tribal Pass is required to be obtained by the Non-islanders from the A&N administration to visit this island.