When Dece Fu fell ill, he failed to send the necessary tribute to their overlord, the Buurba of the Jolof Empire, for several years.
In 1549 Amary volunteered to go, leading an army recruited with the help of his maternal uncle Niokhor Ndiaye, Teigne (title) of Baol.
[1]: 8 To camouflage his movements Amary Ngoné marched the army east to lake Danki, on the southern edge of Jolof, rather than directly to the imperial capital of Ouarkhokh.
Dece Fu Njogu was acclaimed damel, meaning 'breaker', but during the celebrations was killed when a group of bulls brought to be slaughtered stampeded.
[1]: 11 He also led a force north into the Sahara desert to chasten the Hassaniya emirs who were raiding south of the Senegal river, reportedly going halfway to Morocco.