CHICAGO (AP) — The Second City improv theater has announced it appointed an African American, Anthony LeBlanc, as interim executive producer in the wake of the resignation of the troupe’s co-owner and CEO following accusations of racism.

Andrew Alexander resigned Friday, saying in a lengthy letter that he “failed to create an anti-racists environment wherein artist of color might thrive.”

LeBlanc most recently served as an artistic director for the famed Chicago improv company and is also a part-time faculty member at Columbia College Chicago.

Theater company has announced it will soon undertake a search for a long-term executive producer.