Two signed works by contemporary British artist Damien Hirst were stolen from the Exhibitionist Gallery in London. The works, which are from Hirst’s colorful spot paintings series, are worth around $54,000.

Officials believe that one person carried out the robbery and gained entry into the gallery by forcing open the front doors. It appears that the suspect had specifically targeted the two paintings.

Hirst, who rose to fame in the 1990s, is believed to be the richest living artist.