TITLE: GCN CIRCULAR NUMBER: 15346 SUBJECT: GRB 131014A: RATIR Optical/NIR Afterglow Confirmation DATE: 13/10/16 22:34:10 GMT FROM: Eleonora Troja at GSFC Eleonora Troja (GSFC), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), José A. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report: We reobserved the field of GRB 131014A (Fitzpatrick, et al., GCN 15332; Desiante, et al., GCN 15333) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on Sierra San Pedro Mártir from 2013/10 16.36 to 2013/10 16.52 UTC (51.38 to 55.33 hours after the GBM trigger), obtaining a total of 2.11 hours exposure in the r and i bands and 0.88 hours exposure in the Z, Y, J, and H bands. We do not detect the source reported in Troja et al. (GCN 15340). In comparison with SDSS DR9 and 2MASS, we obtain the following upper limits (3-sigma): r >23.8 i >23.4 Z >22.4 Y >21.7 J >21.4 H >20.9 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. We note that the source reported in Troja et al. (GCN 15340) lies within the XRT localization reported in Kennea et al. (GCN 15335), but is ~4 arcsec offset from the XRT enhanced position (Evans et al., 15339). However, the source shows evidence of fading in our latest exposures (>3 sigma level, i band; 2-sigma level, r and Y band), suggesting that it is associated with GRB131014A. We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.