The American Civil Liberties Union is seeking a federal government probe into allegations of constitutional rights violations by U.S. Border Patrol agents in Arizona.
In a letter sent Wednesday to the Department of Homeland Security, the ACLU cites five cases in which the group says U.S. citizens were subject to illegal searches, detentions and excessive force.
The group is asking for an investigation into the individual complaints as well as a comprehensive review of Border Patrol policies.
The complaint comes two weeks after the federal government settled an ACLU lawsuit filed over similar allegations in Washington state.
While admitting no wrongdoing in that case, Border Patrol agreed to retrain agents, among other things.
DHS officials declined comment Wednesday.