Former Pakistan federal minister Sheikh Rasheed Ahmed was injured and four others were killed on Monday when unidentified gunmen attacked his election office in the garrison city of Rawalpindi. Ahmed, who heads the Awami Muslim League, is a candidate for an upcoming by-election to a seat in the National Assembly or lower house of the parliament. The four persons who died were workers of the Awami Muslim League party. The injured party leader was taken to a nearby hospital. Ahmed, 59, was earlier a member of the opposition PML-Q and a close confidante of former President Pervez Musharraf.