Story highlights The move comes even after the staffer, Bryan Pagliano, accepted an immunity deal with the FBI earlier this year

Pagliano's attorneys said their client is now "caught up in a lawsuit with an undisputed political agenda"

Washington (CNN) A former State Department IT specialist who was involved in setting up and maintaining Hillary Clinton's private email server plans to invoke the Fifth Amendment at a deposition next week, refusing to answer "any and all questions that may be put to him."

The move comes even after the staffer, Bryan Pagliano, accepted an immunity deal with the FBI earlier this year and began cooperating with their investigation into the server.

Pagliano was then subpoenaed by the conservative legal watchdog group Judicial Watch to testify as part of an ongoing Freedom of Information Act lawsuit they filed against the State Department. He is one of at least seven witnesses the group is interviewing over the coming weeks in that case.

In a court filing submitted Wednesday in that case, Pagliano's attorneys said their client is now "caught up in a lawsuit with an undisputed political agenda," and asked that the deposition, scheduled to take place on Monday, not be recorded.

Pagliano's attorneys added, "Mr. Pagliano will invoke his right under the Fifth Amendment and decline to testify at the deposition noticed for June 6, 2016."

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