Rebecca Black's rapid rise to YouTube fame, hasn't come without serious drawbacks for the 13-year-old.
Police are investigating two death threats made against the teen, who became an Internet sensation with over 200 million hits on her music video 'Friday'.
Speaking about the threats, Police spokesman Rick Martinez said: "In essence the threats were related to getting the music off the Internet or they were going to kill her.
"We can't validate how serious they are, but we do take it seriously."
Martinez said officers are "keeping an extra eye out" for Black as they investigate the messages, which were made through her Los Angeles-based production and management companies.
Visible Measures, which tracks the performance of Web videos, has said that including copies of the video, spoofs and other versions available on hundreds of video sites, 'Friday' has generated more than 200 million views.
That figure indicates that the song out performed Lady Gaga's 'Born This Way' and Justin Bieber's 'Pray' on YouTube.
However during interviews with 'The Daily Beast' and 'Good Morning America', Black spoke out about some of the backlash she's faced.
One offended listener, she said, told her to "cut yourself and...get an eating disorder so you'll look pretty."
Speaking about the comments, she said: "Those hurtful comments really shocked me. At times, it feels like I'm being cyberbullied."
