Michael Jackson's tomb has been vandalised by 'fans' who attacked the King of Pop's final resting place with marker pens.

Jackson's tomb was marked up by a group of people who broke into the Great Mausoleum at the Los Angeles' Forest Lawn Memorial Park, reports TMZ.

The cemetery is now having to review it's security because of the incident. A source told TMZ: "Activity such as this is a prime example why we are evaluating the level of access to the various entrances of the Great Mausoleum."

The 'fans' wrote messages such as "Love You Michael, you're always in my heart. Love Tammy.", "Miss You Sweet Angel" and "Keep The Dream Alive". Now, a fan group called "The Official Michael Jackson Fans of Southern California" have now offered to clean it up, as part of an effort to keep the cemetery from banning all fans.

Who's outraged by these fan's behaviour!?

Check out our pictures of Michael Jackson over the years...