Sefu bin Hamid represented his father in the eastern Congo region of Kasongo and carried on the war in his stead.
In 1892, after suffering an early defeat, Gongo Lutete betrayed Sefu bin Hamid and defected to the Force Publique.
[2] In response to this, Sefu put the Resident of Kasongo, Lieutenant Joseph Lippens, and his adjunct, Sergeant Henri De Bruyne, under house arrest.
Sefu urged for a renegotiation of the borders of his territories and demanded Francis Dhanis to deliver him Gongo Lutete through a prisoner exchange.
[4] As a tribute to their service, Joseph Lippens and sergeant Henri De Bruyne, were commemorated by the erection of a monument on the boardwalk of Blankenberge, which was designed by the sculptor Guillaume Charlier.