Kyle Kashuv, a pro-gun survivor of the mass shooting in Parkland, Florida, says Harvard College rescinded his admission after racist messages he shared among his high school peers surfaced last month.

Kashuv, an 18-year-old high school senior who survived the shooting at Marjory Stoneman Douglas High School early last year, posted a photo of a purported letter from Harvard withdrawing his admission.

“After careful consideration the [Admissions] Committee voted to rescind your admission to Harvard College,” the letter reads. “We are sorry about the circumstances that have led us to withdraw your admission, and we wish you success in your future academic endeavors and beyond.”

The letter follows HuffPost’s report of Kashuv’s text messages, shared in a Google document for a class study guide, in which he made racist remarks. In the document, seen by classmates and obtained by HuffPost, he repeatedly uses a racist slur: