Jennifer Liewer, executive director of community relations at Tempe Union High School District, said officials don’t know who wrote the post. Officials with the school district began investigating when they learned of the tweet Thursday.
KNXV reported that the Tempe Union High School District sent a notice to parents that referred to the tweet as "insensitive and thoughtless and absolutely unacceptable."
"We will continue communicating with seniors about our expectations regarding senior pranks and behavior related to graduation," the notice said, according to KNXV.
"The post was absolutely inappropriate. It was not representative of the class of 2019 at Desert Vista," Liewer told KPNX.
The account now results in a message from Twitter that says, "Sorry, that page doesn't exist!"
Liewer told KNXV the tweet was deleted and the account was taken down.
The school said it does not sponsor the reported Twitter account and the prank won’t be happening.
In 2016, the school suspended six female students who wore T-shirts spelling out racial slur, KPNX reported. A photo of the students spelling out the slur quickly spread online.