KARACHI: Former bureaucrat and a politician connected to Functional Muslim League and sitting Special Assistant to PM, Imtiaz Ahmed Shaikh, called on Pakistan People’s Party (PPP) Chairman Bilawal Bhutto Zardari and PPP Co-Chairman Asif Ali Zardari in London today and joined the party. Bilawal, Zardari and Faryal Talpur were present on the occasion when Imtiaz Shaikh announced to join the PPP. The PPP leadership and workers have welcomed Imtiaz on joining PPP.