MANCHESTER, N.H. (AP) — Vermont Sen. Bernie Sanders' presidential campaign has suspended two more staffers after it was accused of exploiting a breach in a voter database to access files kept by Hillary Clinton's campaign.

Hillary Clinton, right, laughs with Bernie Sanders during a break at the Democratic presidential primary debate Saturday, Dec. 19, 2015, at Saint Anselm College in Manchester, N.H. (AP Photo/Jim Cole)

Sanders spokesman Michael Briggs confirmed the suspensions following a Democratic debate in New Hampshire but did not immediately provide more details.

The campaign fired its data director this week after finding that he improperly accessed Clinton's files in a voter database owned by the Democratic National Committee and managed by an outside vendor.

Asked if he would apologize during Saturday's debate, Sanders did, to Clinton and to his own supporters. He said, "If I find anybody else involved in this, they will also be fired."