tehsils of Mianwali and Isa Khel, and were separated from Bannu
District (Bannu became part of NWFP) and hence a new district was made with the
headquarters in Mianwali city and placed in Punjab. The district became a part
of Rawalpindi Division. There were four tehsils namely Mianwali, Isa Khel,
Bhakkar, and Layyah. Layyah was included in the Muzaffargarh District in 1909.
The district became a part of Sargodha Division in 1961. Bhakkar Tehsil was
separated from Mianwali District and was made a separate district inside
Sargodha Division w.e.f. 01-07-1982
