Mamadou Taal, a Ph.D. student in Africana Studies, was suspended Monday by the university after he took part in a protest against a career fair attended by defense contractors L3Harris and Boeing last week. Taal is studying at Cornell on an F-1 student visa, which can be terminated by a suspension.

Momodou Taal, a 30-year-old international student, was suspended by the Ivy League school on Monday, just days after participating in a student-led demonstration. The protest, which took place last week, disrupted a campus career fair that included U.S. defense contractors Boeing and L3 Harris—companies with known ties to arms sales to Israel.

Black students at Cornell University say they “do not feel safe” on campus as a graduate student from the United Kingdom, Momodou Taal, is facing deportation after his participation in a “menacing” anti-Israel protest earned him a suspension.