Officials in Oradour-Sur-Glane, near Limoges in central France, covered graffiti scrawled on the entrance to the Center of Remembrance.
The graffiti, which included the word "lie" as well as other graffiti, was discovered on Friday, Le Populaire du Centre reported.
Oradour-Sur-Lane was the site of the biggest civilian massacre perpetrated by the Nazis during World War II.