LAHORE: The National Accountability Bureau (NAB) has on Tuesday summoned Railways Minister Khawaja Saad Rafique in Ashiana Iqbal Housing scandal. NAB summoned Rafique to appear before the probing committee on March 22 regarding his alleged involvement in Paragon City case. A three-member Joint Investigation Team (JIT) has been tasked to record the statements of the railways minister. Moreover, Provincial Health Minister Khawaja Salman Rafique will also appear before NAB probing unit on March 26.