The Internal Revenue Service inappropriately flagged conservative political groups for additional reviews during the 2012 election to see if they were violating their tax-exempt status, a top IRS official said Friday.
In some cases, groups were asked for their list of donors, which violates IRS policy in most cases, she said.
"That was wrong. That was absolutely incorrect, it was insensitive and it was inappropriate. That's not how we go about selecting cases for further review," Lerner said at a conference sponsored by the American Bar Association.
"The IRS would like to apologize for that," she added.
Lerner said the practice was initiated by low-level workers in Cincinnati and was not motivated by political bias. After her talk, she told The AP that no high level IRS officials knew about the practice.
Agency officials found out about the practice last year and moved to correct it, the IRS said in a statement. The statement did not specify when officials found out.
About 75 groups were inappropriately targeted. None had their tax-exempt status revoked, Lerner said.
Senate Republican Leader Mitch McConnell of Kentucky called on the White House to investigate.
"Today's acknowledgement by the Obama administration that the IRS did in fact target conservative groups in the heat of last year's national election is not enough," McConnell said. "I call on the White House to conduct a transparent, government-wide review aimed at assuring the American people that these thuggish practices are not under way at the IRS or elsewhere in the administration against anyone, regardless of their political views."
Read More: Associated Press