Subsequently, the Abu Subhan School playground in Nanupur became a refugee camp.

Mass graves were dug in Dantmara, Began Bazar, Darbar Sharif and Lelang Tea Garden.

These two hill ranges become one at the northernmost point of the upazila and they widen apart as they proceed southwards.

There are some small rivers (khals) originating from the hills both on the eastern and western flanks, all being tributaries of the Halda flowing southwards to the sea.

In between the two hill ranges, Fatikchhari consists of flat farmland annually affected by flash floods caused by heavy rainfall in the hilly catchment areas and the water being drained by several small rivers and the Halda.

There are populations of Tripuris, Chakmas and Mog but it is decreasing as more and more are migrating to the nearby semi-autonomous region of the Chittagong Hill Tracts.

There are also the Manipuris and Oriyas who were brought over by the British during the nineteenth century to work as tea garden labourers.

Fatikchhari Upazila is divided into Fatikchhari Municipality, Nazirhat Municipality, and 18 union parishads: Abdullapur, Bagan Bazar, Bhujpur, Bokhtapur, Dantmara, Dharmapur, Harualchari, Jafathagar, Kanchannagor, Khiram, Lelang, Nanupur, Narayanhat, Paindong, Roshangiri, Samitirhat, Suabil, and Sunderpur.

[14] Al-Jamiah Al-Islamiah Obaidia Nanupur and Al-Jamiatul Islamiah Azizul Uloom Babunagar are prominent Deobandi institutions in Fatikchhari.