TITLE: GCN CIRCULAR NUMBER: 16383 SUBJECT: GRB 140610A: RATIR Optical and NIR Observations DATE: 14/06/11 19:39:38 GMT FROM: Nat Butler at Az State U 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), Eleonora Troja (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 observed the field of GRB 140610A (Evans, et al., GCN 16375) 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 2014/06 11.19 to 2014/06 11.20 UTC (12.06 to 12.26 hours after the BAT trigger), obtaining a total of 0.16 hours exposure in the r and i bands and 0.07 hours exposure in the Z, Y, J, and H bands. We detect no new sources within Swift-XRT error circle (Kennea et al., GCN 16376). In comparison with 2MASS, we obtain the following 3-sigma upper limits: r > 20.22 i > 19.15 Z > 16.99 Y > 17.40 J > 16.68 H > 17.62 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.