Was There A Fire On The 'Glee' Set Yesterday?

Someone call 911? Glee actor Chris Colfer posted this photo on his Twitter account Tuesday evening of a fire truck – with lights flashing – outside the show's studio lot. Acting coy he simply wrote, "Wanna know how hot things got on the set of Glee?"

Yes, we do. But despite followers asking what happened, the Fresno, California native who plays Kurt Hummel on the show, is staying tight-lipped.

Since the truck clearly says Los Angeles Fire Department on the door and the show's set in Lima, Ohio, it's safe to say this isn't just a prop, which has us wondering if there was an actual fire or possibly an injury and a fire truck was called to the scene as well?

We do know that Amber Riley, who plays Mercedes Jones, was treated on set for a cold several weeks ago. And Lea Michele, who plays Rachel Berry, recently dished that she injured her back during a demanding musical number.