Fourteen people were transported to hospitals after a series of medical emergencies during a Chainsmokers concert at Discovery Meadow in San Jose on Friday night, according to local authorities.
The outdoor concert was being held September 4 at Discovery Meadow, located at 180 Woz Way in downtown San Jose. The event began at 5 p.m. and was scheduled to continue until 10 p.m. The Chainsmokers headlined the 18-and-older show, with Don Diablo also appearing on the lineup.
Emergency crews were called to the venue shortly after 8:20 p.m. after receiving reports that more than a dozen people needed medical attention.
The San Jose Fire Department said the first calls came in at approximately 8:22 p.m. Fire officials responded with an ambulance task force, two advanced life-support fire units and a battalion chief as the number of patients became clear.
A total of 14 ambulances were requested to help transport patients from the concert area to local hospitals.
Initial reports Friday night said approximately 10 people had been taken to hospitals, but the San Jose Fire Department later confirmed Saturday that 14 people were ultimately transported.
Authorities have not released the identities, ages or detailed medical conditions of those hospitalized.
NBC Bay Area and ABC7 reported that some of the medical emergencies involved suspected alcohol intoxication or drug-related issues. Officials, however, have not provided a complete breakdown of the cases or said whether all of the hospitalizations were connected to alcohol or drugs.
That distinction is important because multiple patients were treated during the incident and the specific cause of each medical emergency has not been publicly disclosed.
San Jose police officers were also called to the area to help manage traffic while ambulances moved patients away from the venue. No arrests were reported in connection with the incident.
Fire officials said all of the patients had been cleared from the scene within approximately two hours. The emergency response was considered wrapped up by about 10:34 p.m.
The incident occurred during a large electronic dance music event featuring The Chainsmokers, the Grammy-winning duo of Drew Taggart and Alex Pall. The group is known for songs including "Closer," "Don't Let Me Down" and "Something Just Like This."
Discovery Meadow regularly hosts outdoor concerts and festivals near the Children's Discovery Museum and Guadalupe River Park in downtown San Jose.
The concert had been advertised as an 18-and-older event running from 5 p.m. until 10 p.m.
The scale of Friday night's medical response was unusual enough that the San Jose Fire Department assembled an ambulance task force rather than handling the calls individually. Fourteen separate transports required coordination among firefighters, paramedics, ambulance crews and police officers in an area already crowded with concertgoers.
Despite the significant emergency response, officials did not report any arrests or deaths connected with the concert.
Authorities also have not said whether any of the patients suffered life-threatening injuries or how long they were expected to remain hospitalized.
The San Francisco Chronicle reported that all 14 patients were taken to nearby hospitals for treatment. Bay City News separately reported that the patients had been removed from the concert grounds within roughly two hours of the initial call.
ABC7 reported Saturday that several people were recovering from problems believed to involve alcohol or drugs.
The incident adds another reminder of the medical challenges that can arise at large outdoor music events, particularly concerts involving dense crowds, extended periods of dancing and alcohol consumption. However, authorities have not established that heat, crowding or any other environmental factor contributed to Friday night's emergencies.
As of Saturday evening, the San Jose Fire Department had not released additional details about the patients' conditions or the individual circumstances that led to their hospitalizations.
The concert itself was scheduled to end at 10 p.m., shortly before emergency officials said their response at Discovery Meadow was completed.