Who was Maqsood Chaprasi:
According to a death certificate provided by UAE authorities, Maqsood died on June 6 at the age of 49. Previously: In December 2021, FIA filed a challan in a special court against PM Shehbaz and Hamza Shehbaz for their suspected role in laundering Rs16 billion in the sugar scam case. According to the allegation, the money was maintained in ‘secret accounts’ belonging to Shehbaz’s low waged employees. FIA’s report: “The Sharif group’s 11 low-paid employees who ‘held and possessed’ the laundered earnings on behalf of the senior accused were found guilty of money laundering. The crime was also actively facilitated by the Sharif group’s other three co-accused,” the report clarified. Why Maqsood was the ‘prime suspect’: Maqsood worked as a “tea boy/peon” at Ramzan Sugar Mills in Lahore, according to a copy of the FIA challan. In 2017, he was paid Rs25,000 and then “he absconded to the UAE on March 14, 2018.” According to the challan, at least 7 benami accounts were opened in his name, with a total transfer of Rs.2,966 million. Who was Dr. Rizwan: 
Dr Muhammad Rizwan, the former FIA Lahore chief, was probing many high-profile corruption cases involving political bigwigs. He died of a cardiac arrest on May 9. He had a reputation of being one of the most honest officers. What was he investigating: Dr. Rizwan not only supervised the crackdown on the sugar cartel responsible for the shortfall, but he also conducted investigations against PTI dissident Jahangir Tareen and now-Prime Minister Shehbaz Sharif. He was also looking into data and evidence attained from the State Bank of Pakistan and Federal Board of Revenue. What you need to know: Dr. Rizwan was replaced as head of the joint investigation team by Additional Director Abu Bakar Khuda Baksh who was appointed by the newly-elected PML-N-led government last month. Continued to upheld his reputation: According to sources, the JIT led by Dr Rizwan had been threatened and given bribes, but it had maintained its investigation and evidence-gathering against the sugar mafia. Who was Kamran Faisal: 
Back in Jan 2013, Kamran Faisal, who was investigating a high-profile corruption case involving Raja Pervaiz Ashraf was found dead in his hostel room in the federal capital. How did he die? Faisal, an associate director at the agency, was discovered hanging from the ceiling fan in his room at the federal lodge number 2. According to Secretariat police, initial investigations showed that Faisal committed suicide, but his relatives and friends, on the other hand, argued that he was not a man with “weak nerves.” What you need to know: Faisal was one of the officers looking into alleged kickbacks by the then-prime minister Nawaz Sharif in transactions involving rental power plants. He was found dead in a government hostel just a day after the NAB chief told the Supreme Court that Faisal did not have enough evidence to move against the prime minister and 15 others on graft charges. Who was Chaudhry Ijaz Mahmood?
In June 2015, Chaudhry Ijaz Mahmood, the key prosecution witness in Pakistani model, Ayaan Ali money laundering case, was shot dead by 2 unknown assailants right outside his house in Waris Khan area, Islamabad. It was suspected that the model is smuggling currency for former President Asif Ali Zardari. What his wife said: Mahmood’s widow, Saima Ejaz, stated that her husband told her that he was under a lot of stress as a result of his involvement in the high-profile case and unidentified men have been encouraging him to create false entries in the official record, in order to protect Ayan Ali, or undermine the case against her. She claimed Mahmood told her that the callers threatened to murder him if he didn’t comply with their demands.