The Biden administration will expel some of the thousands of Haitian migrants who have been crossing the U.S. border illegally in Del Rio, Texas, placing them on planes heading back to Haiti, the Department of Homeland Security announced Saturday.

The DHS is “implementing a new, comprehensive strategy” to address the 12,000 people who have crossed the border this past week, roughly half of whom are believed to be Haitians, the department said. The six-pronged approach includes surging 400 Customs and Border Protection agents and officers to Del Rio, coordinating with Immigration and Customs Enforcement and the U.S. Coast Guard to relocate migrants to other processing centers, increasing the capacity of removal flights, working with nearby countries to repatriate their citizens and lawful residents, increasing humanitarian aid to prevent crowding, and coordinating with officials to ensure returnees receive support.