Four ISS crewmembers were brought home a month early due to an undisclosed but non-emergency "medical concern".

Watch SpaceX Crew-11 spacecraft blaze a fiery trail through the sky during medical evacuation from ISS (video)

Source: space
Source Link: https://www.space.com/space-exploration/human-spaceflight/watch-spacex-crew-11-spacecraft-blaze-a-fiery-trail-through-the-sky-during-medical-evacuation-from-iss-video