A dual fuel injector for a sequential burner of a gas turbine, the dual fuel injector comprising: - a plurality of separate fingers extending inside the burner and having streamlined bodies with two lateral walls essentially parallel to a hot gas main flow, the lateral walls being joined at the upstream side by a leading edge and at a downstream side by a trailing edge; - a plurality of dual fuel concentric nozzles distributed along each trailing edge of the fingers; - a gas plenum, an air plenum and liquid fuel supply connected to the dual fuel concentric nozzles; wherein the dual fuel concentric nozzles are comprising: - a nozzle downstream end configured to inject gas fuel, liquid fuel and carrier air along a hot gas main flow; - a liquid fuel duct defining a liquid fuel passage for connecting a liquid fuel supply to the nozzle downstream end, the liquid fuel duct comprising a downstream end edge at the nozzle downstream end; - a gas fuel duct concentrically surrounding the liquid fuel duct and defining a gas fuel passage between the outer surface of the liquid fuel duct and the inner surface of the gas fuel duct for connecting the gas plenum to the nozzle downstream end, the gas fuel duct comprising a downstream end edge at the nozzle downstream end - the lateral walls concentrically surrounding the gas fuel duct and defining a carrier air passage between the outer surface of the gas fuel duct and the inner surface of the lateral walls for connecting the air plenum to the nozzle downstream end, the lateral walls comprising a downstream end edge at the nozzle downstream end; characterized in that the downstream end edge of the gas fuel duct is recessed inside the nozzle downstream end with respect to the downstream end edge of the liquid fuel duct; wherein the downstream end edge of the gas fuel duct is recessed inside the nozzle downstream end with respect to the downstream end edge of the lateral walls; wherein the downstream end edge of the liquid fuel duct is flush with the downstream end edge of the lateral walls. - a plurality of separate fingers extending inside the burner and having streamlined bodies with two lateral walls essentially parallel to a hot gas main flow, the lateral walls being joined at the upstream side by a leading edge and at a downstream side by a trailing edge; - a plurality of dual fuel concentric nozzles distributed along each trailing edge of the fingers; - a gas plenum, an air plenum and liquid fuel supply connected to the dual fuel concentric nozzles; - a nozzle downstream end configured to inject gas fuel, liquid fuel and carrier air along a hot gas main flow; - a liquid fuel duct defining a liquid fuel passage for connecting a liquid fuel supply to the nozzle downstream end, the liquid fuel duct comprising a downstream end edge at the nozzle downstream end; - a gas fuel duct concentrically surrounding the liquid fuel duct and defining a gas fuel passage between the outer surface of the liquid fuel duct and the inner surface of the gas fuel duct for connecting the gas plenum to the nozzle downstream end, the gas fuel duct comprising a downstream end edge at the nozzle downstream end - the lateral walls concentrically surrounding the gas fuel duct and defining a carrier air passage between the outer surface of the gas fuel duct and the inner surface of the lateral walls for connecting the air plenum to the nozzle downstream end, the lateral walls comprising a downstream end edge at the nozzle downstream end;