ISLAMABAD, Feb 12 (INP): Federal Investigation Agency (FIA) Additional Director Wajid Zia who headed the Panama case Joint Investigation Team (JIT), appeared before the accountability court on Monday where corruption proceedings are underway against former finance minister Ishaq Dar. Zia is a key prosecution witness in the reference against Dar, accused by the National Accountability Bureau (NAB) of possessing assets disproportionate to his declared sources of income. INP/LK/AH