Cause of death: heart attack
Martine Carol (born Marie-Louise Jeanne Nicolle Mourer; 16 May 1920 – 6 February 1967) was a French film actress. She frequently was cast as an elegant blonde seductress. During the late 1940s and early 1950s, she was the leading sex symbol and a top box-office draw of French cinema, and she was considered a French version of America's Marilyn Monroe. One of her more famous roles was as the title character in Lola Montès (1955), directed by Max Ophüls, in a role that required dark hair. However, by the late 1950s, roles for Carol had become fewer, partly because of the introduction of Brigitte Bardot.
Source : Wikipedia