The ‘Twilight’ series has been added to a list of ‘challenged’ books recently.

The American Library Association (ALA) said in a report this week that Twilight, part of the popular book series written by Arizona author Stephanie Meyer, is one of the most challenged books by critics in 2009 and has joined the ranks of those most frequently requested to be banned from US libraries.

The Twilight Saga movies starring Robert Pattinson, Kristen Stewart and Taylor Lautner are based off of the bestselling books by Stephanie Meyer.

“It is the books which are read frequently which are frequently challenged -- with all the hype around Twilight and the movies and the celebrities I was actually surprised Meyer’s books weren’t higher,” said Angela Maycock at the ALA’s office for intellectual freedom, according to a UK Guardian report.

Ms. Maycock added: “Vampire books in general accumulated a host of complaints last year. “The idea of vampires and other supernatural entities in opposition to certain religious viewpoints”.