In a major development, federal minister Babar Awan resigned after being named in NAB reference.
Awan tendered his resignation to Prime Minister Imran Khan to present himself for accountability and set a precedent.
National Accountability Bureau Rawalpindi has filed a reference against Babar Awan and other six former officials regarding delay in Nandipur power project.
The reference filed in Islamabad Accountability Court on Tuesday.
Those against whom reference has been filed include former Law Minister Zaheeruddin Babar Awan and former Minister for Water and Power Raja Pervez Ashraf.