“Following the detection of the short-duration gamma-ray burst GRB 100206A by Swift/BAT (Krimm et al. GCN 10376), we have conducted follow-up observations with the 0.6m TELMA robotic telescope (+ clear filter) at the BOOTES-2 station in Málaga and with the 1.5m OSN telescope (+ I-band filter) at Observatorio de Sierra Nevada in Granada. No optical afterglow is detected within the Swift/XRT error box (Goad et al., GCN 10378). An upper limit of I = 21 is derived from a combined 9 x 150-s I-band image obtained starting at 18:40 UT (5.2 hr postburst), consistent with the null result reported by Bhattacharya et al. (GCN 10380). The candidate host galaxy reported by Miller et al. (GCN 10377) is also detected at the edge of the error box.” This message can be quoted.