Washington (CNN) -- New details emerged of what the White House knew about the Internal Revenue Service targeting of conservative groups, with spokesman Jay Carney disclosing Chief of Staff Denis McDonough was among the top officials made aware of the matter late last month. In a new timeline provided by Carney to reporters on Monday, General Counsel Kathryn Ruemmler learned on April 24 of a pending Treasury inspector general's report on how IRS staff used criteria targeting conservative groups in assessing eligibility for tax-exempt status. According to Carney, Ruemmler told McDonough as well as other Treasury officials about the pending report. It was the first time the White House acknowledged that McDonough was aware of the report before it became public in early May.
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A Senate committee holds a hearing Tuesday on the IRS targeting
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White House discloses new details of what it knew about the IRS targeting report
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White House spokesman says President Obama wasn't told of the pending report
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NEW: First lawsuit filed over IRS targeting
At the same time, @placeholder emphasized that the information was preliminary and could have changed before the inspector general released his final report on May 14.