Earth, Wind & Fire abruptly postponed a scheduled Thursday concert at San Francisco’s Chase Center after a medical emergency involving one of the band’s members. The decision also affected the planned performance with Lionel Richie, highlighting how the emergency prevented the group from taking the stage.

The band announced the cancellation shortly before the show was due to begin, apologising to fans through a statement on social media. No details were provided about which member was affected or the nature of the medical emergency.