Protest stops play during U.S. Open semi-final match between Gauff, Muchová networthplaza.com

Play between Coco Gauff and Karolína Muchová during a U.S. Open match was stopped Thursday after an environmental protester “glued his feet to the cement floor,” an announcer said.

The match between Gauff, of the United States, and Muchová, of Czechia, has been delayed for around 40 minutes so far.

“NYPD are in the process of resolving a fan disturbance. Play will resume as soon as possible. Thank you for your patience,” U.S. Open Tennis tweeted.

Gauff and Muchová took a seat during the delay. An announcer described it as a protest in the “far reaches” of the stadium.

The match between the two players was at the Arthur Ashe Stadium in New York, which has 24,000 seats.