The inspector general for the Treasury Department is set this week to release a report that says the Internal Revenue Service spent $50 million on conferences for employees between 2010 and 2012.

The Associated Press reported Monday that the report will be released on Tuesday.

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The IRS already is under fire for targeting conservative groups that sought tax-exempt status.

The conferences apparently included a $4 million meeting in 2010 in Anaheim, Calif. The AP reported that the agency did not negotiate lower room rates and that some of the 2,600 participants also received baseball tickets and crashed in presidential suites that cost between $1,500 to $3,500.