Rapper Tone Loc collapsed onstage on Saturday in Des Moines, Iowa, during a concert, reports USA Today.
The seriousness of the incident was not immediately apparent. It happened at the Bridge Bash, being held at the Court Avenue bridge over the Des Moines River.
Three Des Moines Register employees said Tone Loc finished a song, then went to the ground. People attended to him for about five minutes. Fans were asked to leave and the show was shut down.
Read more at USA Today.