Pope Francis flew out of Rome on Wednesday, bound for Kenya on the first leg of a landmark trip to Africa that is fraught with security risks.
Tunisia's President Beji Caid Essebsi declared a nationwide state of emergency and a curfew in the capital after a bomb attack on a presidential guard bus killed at least 12 people on Tuesday.
Pope Francis steps onto African soil for the first time on Wednesday to address the continent's fast-growing Catholic congregation. The Nov. 25-30 tour starts in Kenya and Uganda, He is due to arrive in Nairobi at about 5 p.m. (1400 GMT).
President Uhuru Kenyatta has sacked the five Cabinet Secretaries suspended over corruption claims.