The National Accountability Bureau (NAB) on Saturday sent Opposition Leader in Punjab Assembly Hamza Shahbaz a questionnaire ahead of his scheduled appearance before the bureau’s probe team on April 30. The PML-N leader has been summoned in connection with a probe into his assets, allegedly accumulated beyond his known sources of income. The bureau had previously summoned and interrogated him twice on April 12 and April 16 in the case. Hamza had reportedly failed to give satisfactory answers to the questions put to him by a NAB team during his appearance. According to a notice served on him, the PML-N leader had been asked to furnish record of the investments he made in companies from 2015 to date; details of Salman and Nusrat Shahbaz’s shares in those companies and loans taken by them; and his tax returns and wealth statements for the period between 2006 and 2008. Hamza, who is said to have failed to submit tax returns for the past three years, has been further instructed to provide details of assets acquired from 2005 till 2017. According to the bureau, the Sharif family’s assets stood at Rs 53.6 million in 1999, which soared to more than Rs 683 million over the course of 10 years. The Sharif family owns assets worth more than Rs 3 billion, it said.