Gemini i-band as well as GROND combined g′r′i′z′ and JHK_s white-band images. Object K is clearly detected in the NIR. In addition, the GROND images reveal two more blobs designated #x and #y. The former is only detected in the optical, the latter only in the NIR. Within the astrometric 3σ error, #y could be the NIR counterpart of #x. Also shown is the XRT error circle (radius 7′′) as well as an ellipse circumscribing galaxy C just to guide the eye (2.̋5×1.̋3). North is up and east is to the left.