Senior officials at the U.S. tax agency knew agents were targeting conservative political groups as early as 2011, according to a draft of an inspector general’s report that seemingly contradicts public statements by the commissioner of the Internal Revenue Service.

The IRS apologized Friday for what it acknowledged was “inappropriate” targeting of conservative political groups during the 2012 election to see if they were violating their tax-exempt status. The agency blamed low-level employees, saying no high-level officials were aware.

But on June 29, 2011, Lois G. Lerner, who heads the IRS division that oversees tax-exempt organizations, learned at a meeting that groups were being targeted, according to the watchdog’s report. At the meeting, she was told that groups with “Tea Party,” ”Patriot” or “9/12 Project” in their names were being flagged for additional and often burdensome scrutiny, the report says.

“Tea party” and “patriot” are favorite terms of the small-government conservative movement that has emerged in recent years and is highly critical of President Barack Obama. The 9-12 Project is a group started by conservative TV personality Glenn Beck.

Lerner instructed agents to change the criteria for flagging groups “immediately,” the report says.

The Treasury Department’s inspector general for tax administration is expected to release the results of a nearly yearlong investigation in the coming week.

Among the other revelations, on Aug. 4, 2011, staffers in the IRS’ Rulings and Agreements office “held a meeting with chief counsel so that everyone would have the latest information on the issue.”

On Jan. 25, 2012, the criteria for flagging suspect groups was changed to, “political action type organizations involved in limiting/expanding Government, educating on the Constitution and Bill of Rights, social economic reform/movement,” the report says.

While this was happening, several committees in Congress were writing IRS Commissioner Douglas Shulman to express concern because tea party groups were complaining of IRS harassment.

In Shulman’s responses, he did not acknowledge targeting of tea party groups. At a congressional hearing March 22, 2012, Shulman was adamant in his denials. Shulman was appointed by President George W. Bush, a Republican. His 6-year term ended in November. President Barack Obama has yet to nominate a successor. The agency is now run by an acting commissioner, Steven Miller.

The IRS said in a statement Saturday that the agency believes the timeline in the inspector general’s report is correct and supports what officials said Friday.

The group Tea Party Patriots said the revelation was proof that the IRS had lied to Congress and the public when Schulman said there had been no targeting of tea party groups.

“We must know how many more lies they have been telling and how high up the chain the cover-up goes,” Jenny Beth Martin, the group’s national coordinator, said in a statement Saturday.

“It appears the IRS committed crimes and violated our ability to exercise our First Amendment right to free speech. A simple apology is not sufficient reparation for violating the constitutional rights of United States citizens. Therefore, Tea Party Patriots rejects the apology from the Internal Revenue Service,” Martin said.