Hyderabad,Oct 26:Dr M Nagarjuna,former chairman of SC and ST Committee on Monday complained to Congress party president Sonia Gandhi against G V Harsh Kumar,a Congress MP from Amalapuram, East Godavari district of Andhra Pradesh.In a complaint lodged against Harsh Kumar in New Delhi with the Congress party,he stated that Harsh Kumar produced a fake certificate claiming to be an SC candidate and won the SC reserved seat on Congress ticket from Amalapuram.He appealed to the Congress party president to hold an inquiry into this matter and take a firm action against such malpractices.