Attorney General Jeff Sessions said Thursday that Utah US Attorney John Huber is investigating GOP lawmakers’ allegations against the FBI and that a special counsel is not needed to probe the case.

Huber, an appointee of President Barack Obama, will try to determine whether the bureau abused its power when it obtained a warrant to surveil a former adviser to President Trump’s campaign, CNN reported.

But the AG’s decision to not appoint a special counsel was bound to anger Republicans on Capitol Hill, many of whom have been calling for a tit-for-tat probe of the FBI and Justice Department that would run alongside Robert Mueller’s investigation into Russian election meddling.

But Sessions didn’t rule it out, saying he would rely on Huber’s conclusion before reaching a final decision on whether a second special counsel was warranted.

“We understand that the Department is not above criticism and it can never be that the Department conceals errors when they occur,” he wrote in a letter to leading lawmakers.

“I am confident that Mr. Huber’s review will include a full, complete and objective evaluation of these matters in a manner that is consistent with the law and facts,” Sessions wrote.

“I receive regular updates from Mr. Huber and upon the conclusion of his review, will receive his recommendations as to whether any matters not currently under investigation should be opened, whether any matters currently under investigation require further resources, or whether any matters merit the appointment of a special counsel.”

Huber was also looking at whether the FBI should have done a better job probing Hillary Clinton’s role in the controversy surrounding Uranium One, a Russian nuclear energy agency.