turn in the fire storm surrounding the irs. Last night we asked if what they did was fair. Tonight the fbi is asking, was it criminal? We're talking about the way they singled out conservative groups.... See More
turn in the fire storm surrounding the irs. Last night we asked if what they did was fair. Tonight the fbi is asking, was it criminal? We're talking about the way they singled out conservative groups. And abc's chief white house correspondent, janathon carl is tracking the fast-moving developments tonight. Reporter: It's no longer just a political scandal. The irs's alleged targeting of conservative groups is now the subject of a criminal investigation. The fbi is coordinating with the justice department to see if any laws were broken in connection with those matters related to the irs. Reporter: A just released investigative report says that more than half of the conservative groups targeted were asked for irrelevant and unnecessary information, all part of an effort to single out tea party organizations that were applying for tax-exempt status for extra scrutiny. When the irs first acknowledged and apologized for targeting tea party groups, it said the actions were limited to officials in this cincinnati field office. Abc news has obtained documents showing other irs offices around the country were involved, including two in california, and the headquarters in washington, d.C. The white house insists it had no idea any of this was going on. Can you say categorically that nobody at the white house and nobody on the president's political team had any knowledge involved in any way in the targeting of tea party groups by the irs? Yes. Reporter: Absolutely not? We learned about everything we know about this from what we see in your reports. Reporter: Conservatives aren't buying. Obama's objective is to eliminate all of his opposition. If this isn't a gathering of an enemies' list, I don't know what is. Reporter: All of this comes as a white house that takes pride in being scandal-free, has been hammered by a series of controversies. What went wrong in heng hazy? This seems like a genuine scandal. The latest. Revelation the justice department obtained two months of telephone records of reporters and editors at the associated press, as part of a leak investigation. Reporter: Now those who are responsible could face criminal charges. The most serious of those is allegedly conspir to violate t the constitutional rights of their political opponents. A fire storm and moving faster tonight.
This transcript has been automatically generated and may not be 100% accurate.