GCN Circular 14224
A. Sota (OSN, IAA-CSIC) and A. J. Castro-Tirado (IAA-CSIC), on behalf of a larger collaboration, report: "Following the detection of GRB 130216A by Swift (Melandri et al. GCN Circ. 14223), we are carrying out I-band observations with the 1.5m OSN telescope at Sierra Nevada Observatory starting 32 min post burst. We do not find any new or varying optical source within the 3� radius Swift/BAT error cirle down to I about 20. Observations are ongoing.� This message can be quoted.