Representatives of a trio of stars have denied that their clients are joining the cast of 'Harry Potter and the Half-Blood Prince'.
MTV reports that spokespeople for Naomi Watts, Joseph Fiennes and Irish actor Stuart Townsend all denied media reports that they would star in the sixth film in the series.
Watts had been linked by reports to the role of Narcissa Malfoy.
'Harry Potter and the Half-Blood Prince' opens in cinemas in November 2008.
