It also urged the states to adopt global labour standards.
Sengo, who has lived in Kenya since 2001, was arrested last year following an exposé by BBC Africa Eye.
President Ruto's ties with Morocco were clear from day one in office.
The US warned American citizens and other westerners of a possible terror attack in Tanzania, mainly in Dar es Salaam.
For many in Kinshasa, Francis could make the most impact by issuing a firm declaration on the importance of free elections.
