The 39-year-old star was questioned at a Paris police station after calling the medic and reportedly demanding for a previous operation to be reversed.
A detective said: "She was screaming and shouting about the operation and became extremely threatening. There were repeated calls to the female surgeon who was extremely scared. The suspect is being interviewed."
Karen was arrested at about 10am yesterday (30.06.09) and taken to a station in the fashion district of the French capital city.