PHILADELPHIA (CBS)—Officials at Little Flower Catholic High School for Girls are investigating after disturbing graffiti was found in a cafeteria bathroom on Wednesday.

“Whoever is responsible for this vandalism committed a senseless act of hate speech,” said the school in a letter sent home to parents. “That type of behavior is not acceptable in our school community under any circumstance.”

READ MORE: SEPTA Union Unanimously Approves Strike If Deal Isn't Reached

Police: Teacher Hospitalized Following Brawl Involving Four High School Students 

School officials closed off the bathroom and the offensive graffiti has been removed.

However images of it were shared on social media.

READ MORE: Double Shooting In Eastwick Kills 25-Year-Old Man, Wounds Pregnant Woman: Police

In a Snapchat obtained by CBS3, the graffiti read, “White’s Rule America B*t*h.”

Phishing Attack: Don’t Open Google Doc Link Your Inbox

School officials say disciplinary action will be taken against those responsible.

“The Office of Catholic Education has been notified; an internal school investigation is underway and appropriate disciplinary action will be taken against those responsible,” officials said.

MORE NEWS: 'I Want To Go To Class': Philadelphia Students, Parents On Edge As Possible SEPTA Strike Could Force Virtual Learning