GCN Circular 14175
N. R. Tanvir (U. Leicester), A. J. Levan (U. Warwick), T. Wold (JACH) report on behalf of a larger collaboration: We re-observed the field of GRB 130131A with the WFCAM camera on UKIRT, beginning approximately 20.5 hr post-burst. The source reported by us previously (GCN 14157) is no longer detected in our provisional reduction, indicating a fading of at least 2 mag in the K-band. This confirms the source as the afterglow of the GRB (consistent also with the radio detection by Zauderer et al. GCN 14171). We also report that the afterglow was faintly visible in a Z-band image taken at UKIRT 2hr post-burst (in morning twilight), indicating that this is likely not an extreme redshift event.