Top panel: map of excess TS in the inner region of the ROI centered on PKS 2153−69, after removing the unidentified catalog source 3FGL J2200.0−6930 from the model. Bottom panel: residual excess TS map after modeling and localizing the new source PS J2200.5−6930. Both panels: The cross represents the radio position of PKS 2153−69. The yellow ellipses represent the 68% and 95% positional uncertainties from the catalog for 3FGL J2200.0−6930. The cyan circles represent the 68% and 95% positional uncertainties for the new source PS J2200.5−6930. The blue (top) and red (bottom) circles represent the 68% and 95% positional uncertainties for the new source PS J2152.0−6956. The map radius is 1°. Each pixel corresponds to 0.1°.