[5] Niazi was born in Darra Sher Khan, a village in the Poonch District of Azad Kashmir, being one of the 8 children of Fazal Dad, a councillor from Poonch, and they belong to the Dulli tribe of Poonch, Niazi not being indicative of some Pashtun ancestry but instead a title he chose in the '90s when he was a member of the district council, as his name was regularly confused with that of Sardar Abdul Qayyum Khan, who served as the President and the PM of AJK in the past.
[7] Niazi became a member of the AJK Legislative Assembly on an AJKMC ticket in 2006 and held from 2006 to 2011 different ministerial portfolios in prison, finances and others.
[8] Niazi was re-elected to the Legislative Assembly on a ticket of the Pakistan Tehreek-e-Insaf (PTI) in the 2021 elections from LA-18 Poonch-III.
After taking oath as a member, he received 33 votes in the Assembly, a majority, to become the 13th Prime Minister of Azad Jammu and Kashmir.
On 14 April 2022, Niazi tendered his resignation as Prime Minister after a move by his parliamentary party, the PTI, to replace him with regional president Sardar Tanveer Ilyas through a vote of no-confidence.