Several Black immigration organizations have filed a formal complaint with the Department of Homeland Securitys Office of Civil Rights and Civil Liberties, demanding that the Biden administration halt its continued deportations of Haitian asylum seekers.

The complaint filed by four groups the Haitian Bridge Alliance, UndocuBlack Network, African Communities Together and Black Alliance for Just Immigration requests that any potential witnesses of Border Patrol abuses be allowed to remain in the U.S. while their asylum claims are investigated. The complaint was first reported by theGrio, and signed by dozens of advocacy groups.

More than 13,000 Haitians were camped along the river at the Texas border town of Del Rio last weekend when Border Patrol officers on horseback charged at some of those gathered there, verbally assaulting and appearing to whip them. Photos of the violence shocked the public.

Haitian asylum seekers who have long been subjected to anti-Black discrimination and violence have been trying to enter the U.S. via the Mexican border for years. The assassination of the Haitian president in July and a 7.2-magnitude earthquake in August have only made the situation more dire.