The Environmental Protection Agency (EPA) is tracking social media posts in an attempt to justify spending on security for agency head Scott Pruitt Edward (Scott) Scott PruittJuan Williams: Swamp creature at the White House Science protections must be enforceable Conspicuous by their absence from the Republican Convention MORE, The New York Times reported Tuesday.

The report comes as Pruitt faces increased scrutiny for high levels of spending on his security, including taxpayer dollars spent on first-class travel and security details for trips to Disneyland and the Rose Bowl.

Spokesmen for the inspector general and the EPA declined to comment to the Times about the specific threats over security concerns.

“Scott Pruitt has faced an unprecedented amount of death threats against him,” an EPA spokesman told the Times.

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However, Sens. Tom Carper (D-Del.) and Sheldon Whitehouse (D-R.I.) said Tuesday that internal EPA documents don’t back the agency’s claims that Pruitt requires the high level of security and first-class flights.

“These assertions do not appear to be consistent with the non-public EPA documents we have obtained,” the senators wrote in a letter to Senate Environment and Public Works Committee Chairman John Barrasso (R-Wyo.).

The senators also wrote that the social media monitoring had uncovered “no evidence of a direct threat” to Pruitt.

Pruitt is facing growing pressure to resign over a series of scandals, including his rental of a $50-a-night condo from the wife of a top energy lobbyist and taxpayer money spent on his security detail.