$1\stackrel{°}{.}33\times 1\stackrel{°}{.}33$Fermi-LAT TS maps from the location of the SNR G309.8+00.0 at different energy ranges. All sky maps, of 90″ pixel size, centered at the best-fit coordinates of the 4FGL J1349.5−6206c source have been smoothed with a 2.5σ Gaussian kernel. Upper left panel: Fermi-LAT TS map above 10 GeV. Upper right panel: Fermi-LAT TS map above 5 GeV. Lower left panel: Fermi-LAT TS map above 1 GeV. Lower right panel: Fermi-LAT TS map above 1 GeV when modeling the src-north, src-west, and src-northwest components of the 4FGL J1349.5−6206c source. The cyan contour marks the SNR G309.8+00.0 extension as seen in SUMSS 843 MHz radio data. The yellow circle represents the 68% containment size of the PSF at the energy threshold of each sky map, with no smoothing applied.