Beth Cobert

US personnel chief resigns in wake of massive data breach

Katherine Archuleta, director of the federal Office of Personnel Management, submitted her resignation to President Barack Obama on Friday morning, the White House said. She'll be replaced on a temporary basis by the agency's deputy director, Beth Cobert, who will step into the role on Saturday.

Less than 24 hours earlier, Archuleta had rebuffed demands that she resign, telling reporters she had no intention of leaving and that her agency was doing everything it could to address concerns about the safety of data in its hands.