Alert for Katy Perry's fans, the Twitter account of the 'Dark Horse' hit-maker has been hacked with some weird tweets posted on her micro-blogging site.
The hackers got access to her account and posted several tweets including a post to her rival Taylor Swift, saying "miss you baby" on her timeline, News.com.au reports.
Another weird post aimed at YouTube celebrity Keemstar in offensive language.
"u a f*g @keemstar," the tweet read.
Additionally, the hacker also tweeted a link to a track on SoundCloud, which is believed to be singer's unreleased song 'Witness.'
Later, the hackers posted a screenshot of an email from the music sharing site and announced they had removed the track under a copyright claim by Universal Music Group.
Other celebrities who have their social media accounts hijacked were Taylor Swift, Lea Michele, Britney Spears, Selena Gomez and Justin Bieber.
