Chandra Observations of the Optically Dark GRB030528
  The X-ray-rich GRB030528 was detected by the HETE satellite and its localization was rapidly disseminated. However, early optical observations failed to detect a counterpart source. In a 2-epoch ToO observation with Chandra, we discovered a fading X-ray source likely counterpart to GRB030528. The source brightness was typical of X-ray afterglows observed at similar epochs. Other observers detected an IR source at a location consistent with the X-ray source. The X-ray spectrum is not consistent with a large absorbing column. 
N. Butler, A. Dullighan, P. Ford, G. Ricker, R. Vanderspek, K. Hurley,   J. Jernigan, and D. Lamb