The Afar ports on the northern shore of the Bay of Tajura, opposite Djibouti, were blocked until around 1930; at least 300 or 400 slaves were exported each year to Arabia via this route. As late as 1925, the coastal slave-trade was in the hands of descendants of the notorious 19th century slave trader and French protégé, Abu Bakr of Zeila.

THE CAMBRIDGE HISTORY OF AFRICA, Vol. 7 (1986) By J.D. FAGE et al.