UPDATE: Two minors among the eight people who died at Astroworld

At least eight people died last night at Travis Scott’s Astroworld festival in Houston, Texas, after a crowd surge began pushing hundreds of people toward the front of the concert stage. Per The New York Times, local authorities have confirmed at least 8 deaths, 23 hospitalizations, and hundreds of treatments at an on-site field hospital. At least 11 of the hospitalizations were reportedly of people who were in cardiac arrest.

Organizers of the festival—which first began in 2018—issued a statement on Instagram four hours ago, saying “Our hearts are with the Astroworld Festival family tonight,” and stating a desire to work with and support local authorities. Organizers also stated that the second night of the festival, scheduled for Saturday evening, was canceled.

NBC News reports that there were roughly 50,000 people in attendance at Houston’s NRG Park. Per a press conference held by the city’s fire chief last night, around 9:15 p.m., “the crowd began to compress toward the front of the stage,” with many reports of people being trampled or falling unconscious. The Houston Chronicle reports that Scott paused the performance several times during the night after seeing people near the stage in obvious distress.

The Houston Police Department stated at that same press conference that the causes of the crowd surge remain unclear. Video from the festival has begun to emerge online over the last 12 hours, showing scenes of unconscious bodies amidst crowds of dancing people. The Times quotes at least one 17-year-old attendee who described the event as being “like hell;” another noted that the event had been “hectic” since its start time earlier in the afternoon. Authorities at the press conference said that the Houston medical examiner is currently investigating to determine a cause of death for the multiple fatalities at the festival.