The latest expansion of the UN response plan brings to seven the number of African countries taking in large numbers of Sudanese refugees.
His captors have demanded $15,000 (Sh1,970,418) for his release, a sum that Mahad and his relatives cannot afford.
Ocean Viking also has aboard 113 people recovered on Wednesday night and a further 88 rescued on Thursday from "an overloaded inflatable craft".
Al-Burhan notes the shared goal of strengthening relations across political, economic, and military domains.
The groups are most visible at roundabouts and main street intersections, where their often-masked members install checkpoints, blocking traffic with weapon-mounted armoured vehicles.
Only two out of the 42 migrants who were on board the boat survived after leaving from Jebiniana, a small town near Sfax.