The Andhra Pradesh reorganization Act, 2014
Part II Reorganisation of the State of Andhra Pradesh
3. Formation of Telangana State.
On and from the appointed day, there shall be formed a new State to be known as the State of Telangana comprising the following territories of the existing State of Andhra Pradesh, namely:-
Adilabad, Karimnagar, Medak, Nizamabad, Warangal, Rangareddi, Nalgonda, Mahbubnagar, Khammam (but excluding the revenue villages in the Mandals specified in G.O.Ms. No. 111 Irrigation & CAD (LA IV R&R-I) Department, dated the 27th June, 2005 and the revenue villages of Bhurgampadu, Seetharamanagaram and Kondreka in Bhurgampadu Mandal) and Hyderabad districts, and thereupon the said territories shall cease to form part of the existing State of Andhra Pradesh.