(WKMG) — George Zimmerman, the neighborhood watchman who shot and killed 17-year-old Trayvon Martin, has been withdrawn from school at Seminole State College by school officials, citing safety reasons.

SSC officials released a statement saying, “Due to the highly charged and high-profile controversy involving this student, Seminole State has taken the unusual but necessary step this week to withdraw Mr. Zimmerman from enrollment. This decision is based solely on our responsibility to provide for the safety of our students on campus as well as for Mr. Zimmerman.”

Zimmerman first enrolled at Seminole State in 2003, earning a vocational certificate in Insurance Agent, General Lines, officials said. He then was enrolled in 2009–2012, working toward an Associate in Arts degree, General Studies.

Zimmerman has not been arrested or charged in Martin’s death, claiming he shot Martin in self-defense.