WASHINGTON – Senior Senate Judiciary Committee members will hold a closed-door meeting this week with special counsel Robert Mueller, who is overseeing the Justice Department’s investigation of Russian meddling in the 2016 election, it was disclosed Tuesday.

Mueller, who has hired 12 attorneys to assist with the probe, is schedule to meet with committee chairman Chuck Grassley (R-Iowa) and the ranking Democratic member Dianne Feinstein of California.

Sens. Lindsey Graham (R-S.C.) and Sheldon Whitehouse (D-R.I.), who head the Senate subcommittee that deals most closely with the FBI, will also attend the sit-down with Mueller.

Officials said the meeting will cover the scope of Mueller’s investigation and help ensure there is no conflict between his probe and the work of the congressional committees.

“There are a few areas where it’s possible for there to be some conflict and so that’s why we’ve asked for the Department of Justice to set up a deconfliction apparatus of some kind so we can talk to each other,” Whitehouse told Politico last week.

Mueller is investigating the circumstances surrounding the recent firing of FBI Director James Comey, in addition to examining whether Trump campaign associates colluded with Russian officials during the 2016 election.

President Trump has repeatedly denied that he had any contact with Moscow in the two years prior to his election, and has characterized the investigation as a “witch hunt.”

An aide to Grassley declined comment on whether the meeting was requested by Mueller or the Judiciary Committee chairman.