The 2013 edition of Miami’s annual Ultra Music Festival is set to begin today (March 15) – but last night, during the setup for the outdoor bash, an LED screen fell from the main stage, leaving several people injured.

One worker suffered serious injuries, while another is reported to be in critical condition. Lt. Ignatius Carroll Jr., a spokesman for the Miami Fire Rescue department, told the Associated Press that the victims were transported to Ryder Trauma Center. A third person experienced minor injuries and was sent to another hospital in the area.

As the large screens were being assembled nearly 30 feet above the stage, a section of the display suddenly collapsed. “For whatever reason, they came crashing down on workers on the stage,” Carroll Jr. said.

“Fire Rescue was on site so there was a rapid response,” said event spokeswoman Alexandra Greenberg in a statement. “Festival organizers are working with – and supporting – authorities as they investigate the details behind the accident.” Another spokesperson added, “Once we get the approval that everything is structurally sound, we’ll go ahead and allow the event promoter to open up the finished stage.”

According to a post made via the fest’s official Twitter account, the show will go on as scheduled. This year’s Ultra Music Festival boasts an impressive lineup over the next two weekends, including such acts as Bassnectar, David Guetta, Sleigh Bells, Hot Chip, Matt and Kim, Snoop Dogg, Deadmau5, the Weeknd and Azealia Banks. Click here for more details.