Avicii accepts the favorite electronic dance music artist award at the 41st American Music Awards in Los Angeles, Calif., Nov. 24, 2013. Reuters/Lucy Nicholson

At least 38 people, many of them minors, were hospitalized Wednesday night mainly for causes related to drug and alcohol overdose during a concert by Avicii, a Swedish DJ, at Boston’s TD Garden.

More than 50 people were given medical attention at the venue, but there were no fatalities, The Boston Globe reported, citing Michael Bosse, deputy superintendent for Boston EMS. According to reports, the incident took place after some minors consumed “a dangerous substance,” but the symptoms of those hospitalized were not life-threatening. Avicii’s spokeswoman, Diana Baron, reportedly said that she could not comment about what happened unless she received a full report from the venue and promoter, Live Nation.

“There may have been some illicit drug involved, but none have been identified,” Bosse said, according to The Boston Globe, adding that many fans were already intoxicated when they arrived at the event.

Mike Santostefano, 19, who attended the concert, told The Boston Globe: “You couldn’t breathe if you were on the floor. It was the best and worst time ever,” and said that he saw “a lot of people who couldn’t handle themselves. People who don’t do drugs come here and do drugs.”

The 24-year-old Swedish DJ, who was born Tim Bergling, took to Twitter Thursday morning to comment on the incident at the concert, which marked the beginning of his tour scheduled to end in Spain in September.

Medical emergency services reportedly declared a "Level 2 Mass Casualty," which indicates that more than 30 people needed to be hospitalized. The Boston Globe reported that several ambulances, a Boston EMS emergency trailer and Boston police arrived at the scene.

According to reports, two people died of suspected drug overdoses at an electronic-music festival in Las Vegas over the weekend, which was attended by Avicii.

At the Las Vegas event, police officials said that about 800 people were given medical treatment while 25 others were hospitalized during the Electric Daisy Carnival, a three-day dusk-to-dawn music party, which was attended by more than 130,000 fans.