WASHINGTON - Don't look for the outcry over the Internal Revenue Service's improper targeting of tea party groups to subside with the ouster of the agency's acting commissioner.

Three congressional committees are investigating and Attorney General Eric Holder says the FBI is looking into potential civil rights violations at the IRS.

President Barack Obama says Treasury Secretary Jacob Lew asked for and accepted Acting Commissioner Steven T. Miller's resignation.

Miller's departure came five days after the IRS revealed that agents had improperly targeted groups with "tea party" or "patriots" in their in their applications for tax-exempt status. It came a day after an inspector general's report blamed ineffective management in Washington for allowing it to happen for more than 18 months.