The National Accountability Bureau (NAB) on Saturday filed a reference against 11 people, including Pak Sarzameen Party (PSP) chief Mustafa Kamal, for illegal allotment of state-owned lands. According to the reference that has been filed in an accountability court of Karachi, Sindh Building Control Authority Director General Iftikhar Kaimani was also involved in the scam. The accused have inflicted a damage of over Rs 2.5 billion to the national exchequer.