The Montreal office of French presidential candidate Nicolas Sarkozy has been vandalized.

Montreal police were called to his office, located in a commercial building, and found it covered with graffiti and leaflets on Monday.

Police said no arrest has been made so far and they are continuing to investigate.

Conservative front-runner Sarkozy will square off against Socialist Ségolène Royal on May 6.

Sarkozy, France's blunt former interior minister, has a platform of economic reforms and tough measures against crime and immigration.

Royal has said she would increase government spending to boost employment.