GCN Circular 6266
E. Berger (Carnegie Observatories) reports: "Inspection of our Gemini-North/GMOS images taken on 2007 April 8.39 UT in 0.55" seeing reveal that the source near the center of XRT source S2 (GCN 6265), which is classified as a star in SDSS, is embedded within a clearly extended source. This may be a chance superposition of a star on top of a background galaxy, or more likely, it is a bright AGN, similar to the source coincident with XRT source S1 (GCN 6262). Additional XRT observations are required to verify whether the source is steady. We also note that in addition to the galaxy located 3.7" from the XRT position, our images reveal five fainter extended sources within the error circle."