Archana Ram
April 21, 2010 AT 05:55 PM EDT

Rihanna was taken to a private clinic in Zurich, Switzerland following her concert Monday night, MTV UK reports. The cause was unknown, but the singer was released three hours later and continued on her “Last Girl on Earth” tour, playing to a sold-out crowd in Lyon, France last night. She begins the North American leg of her tour in July with Ke$ha.

UPDATE: Rihanna’s rep tells People: “[She] had an injured rib and went to have it looked at to be sure it was nothing serious, and it wasn’t.”

You May Like