On Thursday, the 33-year-old “Shallow” singer tweeted: “Fame is prison.”
Many fans thought Gaga was hinting at new music, but Knox took the tweet literally … and perhaps personally.
The next day, the 32-year-old American who spent four years in an Italian prison in a highly publicized murder case, decided to call the pop star out.
“I hear you, but…prison is prison,” Knox tweeted in response to Gaga.
In 2007, Knox sparked a media frenzy when she was was convicted alongside her then-boyfriend, Raffaele Sollecito, for the murder of her British roommate, Meredith Kercher in Perugia, Italy. During her four years in prison, she vehemently maintained her innocence.
Earlier this year, Knox was awarded roughly $21,000 after the European Court of Human Rights ruled she had not had a fair trial.
In June, Knox returned to Italy to participate in a panel discussion at the University of Modena called “Trial by Media,” which was organized by the nonprofit Italy Innocence Project.
Knox noted at the event that she was uneasy being in the country again.
“I am afraid of being harassed, of being trapped,” she said, according to Reuters. “And I am afraid that new accusations will be made just because I have come here to give my version of the facts.”