Zambian President Michael Sata is dead, secretary to the cabinet Rowland Msiska confirmed Wednesday, according to dpa. The 77-year-old had left Zambia for London more than a week ago to receive medical treatment for an undisclosed illness. He was accompanied by his wife and family members. Msiska said Sata passed away at a London hospital Tuesday evening. Msiska called for calm and said information about the funeral would be communicated in due course.