Joe Perry collapsed backstage during Hollywood Vampires’ performance in Coney Island, New York Sunday night, with the guitarist requiring transportation to a nearby Brooklyn hospital.

Video from the concert at the Ford Amphitheater shows Perry seated on the drum riser and seemingly dazed mid-performance before abruptly stumbling offstage. Once backstage, the guitarist lost consciousness and collapsed; EMTs on site revived Perry and immediately transported him to the hospital around 9:30 p.m. EST.

“If you notice one of our brothers is not onstage with us, he was very sick before show,” Cooper told the audience of Perry’s absence (via Aerosmith fan site AeroFanatic). The Hollywood Vampires continued on with Sunday’s performance following Perry’s exit. Cooper asked the crowd to chant “Get well, Joe” during the band’s performance.

After the show, Cooper tweeted that the guitarist was in stable condition. “Thanks to everyone asking about our brother Joe Perry,” Cooper wrote. “He is stable right now, with family & is under the best care.”

“Joe Perry is stable and resting,” a rep for the group tells Rolling Stone. “His brother Vampires and fans wish him a speedy recovery.” The rep later added that Perry was “doing well and resting and appreciates all your good wishes.”

One hour before the concert, Perry appeared to be in good spirits, posting a photo of him “warming up” with Hollywood Vampires’ Tommy Henriksen prior to the Coney Island gig.

Watch fan footage of Perry staggering off the stage below:

#JoePerry collapsed on stage just now! He had to sit on drum kit and then went behind a small wall and passed out. FDNY and NYPD carried him off quickly. #Aerosmith #hollywoodvampires A video posted by Eileen (@leeniepics) on Jul 10, 2016 at 6:33pm PDT

This story is developing.

Aerosmith’s Steven Tyler discusses the secret to Aerosmith’s longevity. Watch here.