ZURICH - Pop star Rihanna was rushed to hospital after performing in Switzerland on Monday night.
The Umbrella singer played to a sold-out concert in Zurich but after leaving the Hallenstadion venue just after midnight she was taken to the Hirslanden private clinic via a blacked-out Mercedes-Benz.
The 22-year-old singer was escorted into the accident and emergency department to be treated for a mystery ailment.
Alenka Ambroz, head of the clinic's corporate communications, said: "Rihanna arrived at the accident and emergency unit. We're not going to give any details."
She left the hospital at about 2.55am, more than two and a half hours after being admitted, and was taken back to the venue.
It seems Rihanna's mysterious medical problem hasn't had any long-lasting effects though as she was able to take to the stage in Lyon, France, last night.
Rihanna'sLast Girl On Earth tour is her most ambitious yet and features a number of costume changes and rigorous dance routines.
She recently said: "We've never done a tour to this capacity. The production is unbelievable and so are the costumes." - Bang