Interior inspector general opens investigation into multiple department senior executives

The seal of U.S. Interior Department is seen during a news conference May 11, 2010 in Washington, DC.  Secretary of Interior Ken Salazar announced that he would split the Minerals Management Service into two agencies, one would in charge the inspection of oil rigs, investigation of oil companies, and enforcement of safety regulations, as the other would supervise drilling leases and royalty dollar collections.  (Alex Wong/Getty Images)

Washington (CNN)The Interior Department's Inspector General has opened an investigation into potential ethics violations of several senior executives at the department, according to a letter obtained by CNN.

The inspector general opened the investigation after the Campaign Legal Center, a nonpartisan ethics group, submitted a complaint to the office in February. The complaint named six senior executives in the department who continued to do some work or meet with people the executives for whom they had previously lobbied or worked.
The complaint highlighted potential ethics violations from Interior employees in leadership positions including the department's Deputy Director of Intergovernmental and External Affairs Benjamin Cassidy, White House Liaison Lori Mashburn and Deputy Director of Intergovernmental and External Affairs Timothy Williams. All six named in the complaint are political appointees.
The complaint details instances where these officials met with people who worked for their previous employers while they were working in their roles at Interior. In Cassidy's case, the complaint says that he continued to meet with and solicited comments from National Rifle Association officials about Interior plans that would impact the NRA. Cassidy lobbied for the NRA before working at Interior.
    Assistant Secretary for Insular and International Affairs Doug Domenech was the director for the fueling freedom project at the Texas Public Policy Foundation before joining the department. The complaint alleges that Domenech met privately with his former employer to discuss an ongoing lawsuit between the department and foundation. Six months later, Interior settled the lawsuit, according to the complaint.
    The Interior Inspector General's office confirmed to CNN that the investigation had been opened but would not comment further, because it is an ongoing investigation.
    After receiving the complaints, Interior's Office of the Secretary "immediately" consulted with the department's Ethics Office. The Ethics Office reviewed each complaint and provided materials to Interior's chief of staff, who "has taken appropriate action," Interior Department spokeswoman Faith Vander Voort told CNN in an email.
    Vander Voort said all of the materials were also provided to the inspector general's office.
    Earlier this month, the Interior inspector general opened an investigation into the department's newly-confirmed Secretary David Bernhardt for potential conflicts of interest after several complaints were filed by advocacy groups to the office.
      Bernhardt has come under intense scrutiny from Democratic members of Congress and advocacy groups for his ties to the fossil fuel industry as a former oil and gas lobbyist.
      "We hope this investigation will answer whether these officials are working on behalf of the American people, or on behalf of the interests that used to pay their salary," said Delaney Marsco, Campaign Legal Counsel ethics counsel, in a statement.