CBS's hit reality competition series The Amazing Race has officially shut down production on Season 33 due to concerns about coronavirus, TV Guide has learned.

"All contestants and production staff are in the process of returning home," a CBS spokesperson told Variety about the decision to suspend production. "At this time, no Racers or anyone on the production team traveling with them have contracted the virus, or shown symptoms, and we are not aware of anyone being exposed to it. Out of an abundance of caution, everyone involved in the show will continue to be monitored when they return home. The health and well-being of the Racers and the production team are our top priorities."

TV Guide has also learned that the Racers in question had visited Scotland and England so far this season, and only three episodes had been filmed. Right now, it is unknown when The Amazing Race Season 33 will resume production.

The Amazing Race is best known for pushing contestants to their limits as they travel the world by air, land, and sea while interacting with locals in various countries on the way to their final destination. The adventurous premise makes for an exciting series, but with more cases of coronavirus being reported worldwide, CBS has decided to play it safe.

Variety was the first to report this news.

Phil Keoghan, <em>The Amazing Race</em>Phil Keoghan, The Amazing Race