US guitarist Carlos Santana has received medical attention after collapsing onstage during a show in Michigan.
The musician, whose band is known for hits including Smooth and Maria Maria, was attended to by several of the venue's staff and medical personnel.
Videos shared on social media show Santana, 74, waving to fans as he is helped off the stage.
Members of the audience were reportedly asked by venue staff for their "prayers" after the "severe" medical emergency.
The incident occurred during Santana's Miraculous Supernatural Tour, which is currently under way with funk band Earth, Wind & Fire.
Santana was performing at Pine Knob Music Theatre, an outdoor venue near the city of Detroit.
According to reports, the singer was 20 minutes into his set, about to perform the song Joy, when he sat down and then fell backwards.
His condition reportedly improved shortly afterwards, but he was wheeled offstage.
The musician was forced to postpone part of a Las Vegas residency in December last year, after an "unscheduled" heart procedure.
He resumed the residency in January and began the North American tour in March.