Left: gamma-ray counts map above 10 GeV in the inner 5° around NGC 3603. The identified 3FGL catalogue sources are labelled with red crosses. The two unassociated catalogue sources are labelled with green crosses. The position of NGC 3603 is marked as a magenta diamond. Middle: residual map after subtracting all the identified catalogue sources and the diffuse background. Right: residual map after subtracting all the identified catalogue sources and the diffuse background, as well as the unassociated catalogue source 3FGL 1111.9-6038. Also shown is the best-fit 2D Gaussian template (white circle, the radius corresponds to the 1σ of the Gaussian), the position and extension of 2FHL J1112.1-6101e (green circle), and the position of the five point sources (white “x”) used to test the hypothesis that the extended emission comes from several independent point sources.