The NAACP has filed a lawsuit against election officials in Waller County, Texas, accusing them of suppressing black voters.

The advocacy group said in a statement Tuesday that the county violated the Voting Rights Act and the Constitution by not providing an early voting location at Prairie View A&M University, a historically black university. NAACP brought the lawsuit on behalf of five students.

Leah Aden, deputy director of the NAACP Legal Defense and Educational Fund, said in the statement that Waller County has shown a “troubling pattern” of limiting the rights of black voters.

“Since at least the early 1970s, Waller County has consistently tried to limit the political power of Black voters in the City of Prairie View and at Prairie View A&M specifically by undermining their right to vote,” Aden said.

(more at the hill.com)