X Factor bosses also step up security to protect finalist Katie Waissel
Vile messages have been posted about the blonde singer, 24, on Facebook and Twitter.
‘These threats are disgusting and outrageous,’ an X Factor spokesperson tells the Daily Mail.
This is cyber bullying and we will not put up with it. We are doing what we can to stop it and are contacting police.’
Katie was reportedly interviewed by officers earlier this week over her concerns.
Bosses have also been stepped up security to protect her and the fellow contestants.
Last week, Katie revealed that someone threw a banana skin at her.