Late King of Pop Michael Jackson”s tomb has been ruined by a group of vandals, who have marked the walls of the singer’s mausoleum with hidden messages in permanent ink.

Security at Forest Lawn in Glendale is watching out for ’fans’ who have been writing messages outside the main window of the building in which MJ in entombed.

The messages are mostly hidden underneath ledges or in spots covered by bushes.

The writings include, “Miss you” and “Keep the dream alive.”

“Activity such as this, is a prime example why we are evaluating the level of access to the various entrances of the Great Mausoleum,” TMZ.com quoted the reps at Forest Lawn as saying.

Forest Lawn also said that anyone caught vandalizing the cemetery would be banned for life.