The Sigma Pi fraternity at Cornell University threw objects and made a reference to the late Trayvon Martin at black students Sunday morning, according to the school’s Cornell Daily Sun.

Sophomore student Beverly Fonkwo was walking home with her friend when a group from the fraternity group’s house began to throw items at them. When Fonkwo and her friend asked them to stop twice, Fonkwo said the group continued to toss the objects and responded by saying, “Come up here, Trayvon” and other racial comments.

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“I feel like it was targeted and racially motivated, we felt very threatened,” Fonkwo told the Daily Sun. “Meanwhile, the assailants were just laughing at the whole situation until we called the police and then they ran inside.”

Sigma Phi President Zach Smith told the Daily Sun that one person has been identified by the fraternity as the person throwing the bottles, but was not a member of the fraternity.

Cornell Chief of Police Kathy Zoner confirmed Fonkwo’s story, but could not disclose more information on the ongoing investigation, which is led by Ithaca Police.

Correction: Zach Smith is the president of Sigma Pi fraternity, not Sigma Phi fraternity.