British singer Ed Sheeran has told fans via Instagram that he's had a bicycle injury and may have to change some concert dates. The popular singer said Monday he's had "a bit of a bicycle accident" and is "currently waiting on some medical advice, which may affect some of my upcoming shows." Sheeran is scheduled to perform a series of shows in Asia starting on Oct. 22. He asks fans to "stay tuned" for further news. The Instagram post showed a photograph of his tattooed arm in a cast.