On 13.03.2013, Parveen Rehman, Director of Orangi Pilot Project (OPP), was shot by two unknown persons, at around 7:30 pm, at Pukhton Market, near main Manghopir road. On the same day FIR No. 104/2013, was lodged by Wali Dad, driver of deceased Parveen Rehman. On 14.03.20213, senior commander of TTP, Qari Bilal, was allegedly killed in an encounter within the area of Manghopir and one 9mm pistol was recovered from him. On the same day, approximately three to four hours after the encounter, it was announced in a press conference by senior police officials of Sindh Police, that Parveen Rehman was murdered by Qari Bilal, who has been killed by the police in an encounter. It is pertinent to note that the crime empties recovered from the place of incident and the 9mm pistol recovered from Qari Bilal were not even sent to Forensic Science Laboratory, for matching, when Qari Bilal was declared as the real culprit behind Parveen Rehman’s murder in the press conference. On 05.11.2013, the aforesaid FIR 104/2013 was disposed off as “A” Class. Thereafter, the human rights activist and sister of deceased, Aquila Ismail, filed Constitution Petition No. 50/2013, before the Honourable Supreme Court of Pakistan, for proper investigation into the murder of deceased Parveen Rehman. On 03.02.2014, the Honourable Supreme Court directed District & Sessions Judge (West) Karachi, Mr. Ghulam Mustafa Memon, to inquire into the matter. The inquiry report was submitted, wherein it was held that to reduce the pressure in such a high-profile case, the police seemed to have manipulated the investigations. The matching of crime empties recovered from the place of incident with the weapon recovered from Qari Bilal, was also not free from manipulation. On 10.07.2014, the Honourable Supreme Court directed the formation of a JIT to conduct proper investigation into the murder of Parveen Rehman. Eventually, following five accused persons were arrested:

i. Raheem Sawati
ii. Imran Sawati
iii. Ahmed Khan @ Ahmed Ali @ Papu Shah Kashmiri
iv. Amjad Afridi
v. Ayaz Sawati

On 24.05.2016, accused Raheem Sawati confession was recorded under Section 21-H, ATA, 1997, by SP Investigation-I, West Zone, Karachi, wherein he admitted that he was the master-mind behind the brutal killing of Parveen Rehman and also specified the role played by each co-accused.

The JIT affirmed the role of the five accused persons played in the murder of deceased Parveen Rehman. Thereafter, on the directions of the Honourable Supreme Court another JIT headed by FIA was constituted on 18.01.2019, which confirmed the finding of the previous JIT and also found the interview of Parveen Rehman which she gave before her death in December 2011, on Land, Politics and Violence in Karachi. It is pertinent to note the real investigation of the present case only began in 2015, three years after the murder of Parveen Rehman and the lapse of time made it very difficult to gather any technical data and other evidence against the accused persons. The Anti-Terrorism Court on 17.12.2021 convicted all four accused persons, except Imran Sawati, for murder of deceased Parveen Rehman and sentence them to life imprisonment, whereas, accused Imran Sawati was only sentenced to seven-year imprisonment for subverting the investigation and trial. The Anti-Terrorism Court based the conviction on the fact that when the confessional statement of accused Raheem Sawati, which he gave in 2016, is read in juxtaposition with the Interview of Parveen Rehman, which gave in 2011, it becomes clear that accused Raheem Sawati was threatening deceased Parveen Rehman to illegally occupy the land in the premises of OPP for establishing a karate club and later on planned to murder the deceased to get rid of her.