  We present the data acquired by the TAROT automated observatory on the
afterglow of GRB 020531. Up to now, no convincing afterglow emission has been
reported for this short/hard GRB at any wavelength, including X-ray and
optical. The combination of our early limits, with other published data allows
us to put severe constraints on the afterglow magnitude and light curve. The
limiting magnitude is 18.5 in R band, 88 minutes after the GRB, and the decay
slope power law index could be larger than 2.2.
