A conservative watchdog announced Thursday that it filed a lawsuit against the Justice Department seeking information special counsel Robert Mueller's security detail.

Judicial Watch said in a press release that it took legal action with the U.S. District Court for the District of Columbia because the DOJ failed to respond adequately to a March 19 Freedom of Information Act request.

Not only is the watchdog group looking for specifics on expenses, disbursements, and security detail costs for Mueller's security detail, but also the logs maintained by the security detail assigned to Mueller.

A DOJ spokesperson declined to comment.

The DOJ has spent more than $25 million total so far for Mueller's Russia investigation, according to a government document released earlier this month.

Judicial Watch has also taken legal action in an effort to obtain details about the budget proposed for Mueller's office.

“The Justice Department, the FBI and Special Counsel Mueller’s continue to operate as if they are above the law,” Judicial Watch president Tom Fitton said in a statement. “The American people have a right to know how much taxpayer money is being thrown at Mueller’s massive investigation. Judicial Watch has never before seen this level of secrecy surrounding the operation of a special or independent counsel.”

Mueller took over the Russia investigation in May 2017 and has so far brought criminal counts against more than 30 people and three Russian entities, producing more than 100 criminal charges.

[Also read: Jerome Corsi: FBI, Mueller 'harassing' my family]