In December 2010 , Hizbul merged into Al - Shabaab , under the name ' Al - Shabaab ' , after conflict between the two groups .
In December 2010 , Hizbul re-separated in September 2012 .
In December 2010 , Hizbul merged into Al - Shabaab , under the name ' Al - Shabaab ' , after conflict between the two groups , but re-separated in September 2012 .