After resuming production of season 9, Chicago Fire has now suspended filming due to a COVID-19 outbreak on set. The news broke on Wednesday, the same day the new season premiered on NBC.

As EW reported, multiple members of the production team—including some of the most important members of Zone 1—tested positive for the novel coronavirus late last week.

Chicago Fire season 9 suspended by COVID-19

Universal TV and Wolf Entertainment, behind hits like Law & Order: SVU, was forced to halt the production of popular TV series Chicago Fire after suffering an outbreak of COVID-19 among crew members.

According to EW, the series stopped filming on Sunday, Nov. 8, and quarantined the entire team after the positive COVID-19 tests.

Following instructions from NBCU, the filming will stop for two weeks until all members of the cast and crew pass corresponding exams and tests.

Chicago Fire, the latest series affected by COVID-19

Unfortunately, Chicago Fire is not the first U.S. film or TV production to face a COVID outbreak on set, either.

Jesse Spencer and Taylor Kinney in a scene from the series 'Chicago Fire', in 2010.

In just the last few months, other popular shows including Young Sheldon, Elite, and The Witcher have suspended filming as a precaution after cast and crew were exposed to the virus.

Not only that, but Chicago Med—crossover series of Chicago Fire—also suspended production after a COVID outbreak just over a month ago. 

Chicago Fire premiered season 9 on Wednesday night. It's unclear if the suspension of filming will affect the schedule of the season.