Flying somewhat below the media radar this week is the news that the Environmental Protection Agency’s inspector general is looking into whether agency head Lisa Jackson used a private email account with the alias “Richard Windsor” for official business, thus circumventing federal transparency laws for official communications, including the Freedom of Information Act. The news was first broken by Politico.

The IG’s action follows Republicans on the House Energy and Commerce Committee sending a letter to the EPA last week demanding an investigation into the email accounts. According Chris Horner of the Competitive Enterprise Institute, who was apparently the first to uncover the account, Jackson uses other email addresses in addition to the “Richard Windsor” one.

The EPA has acknowledged Jackson uses the Windsor account but downplayed its significance, arguing extra accounts are necessary to deal with the sheer volume of emails they receive.