A pair of Roger Waters concerts that were set to take place in Poland next year has been canceled amid outrage over comments he recently made about the Russian war against Ukraine. The venues are owned by the city of Krakow, which “[will] not tolerate them being used for an artist spreading ideas objectionable to most people in Poland,” AP reports.

Earlier this month, Waters posted an open letter to Ukrainian first lady Olena Zelenska on his website in which he said the “extreme nationalists” in Ukraine “set your country on the path to this disastrous war.” Per The Guardian, city officials in Kraków were set to vote on a proposal next week labeling Waters as a “persona non grata.”

A couple months ago, Waters went on CNN in which he said he calls President Joe Biden a “war criminal” for “fueling the fire in Ukraine.”