Washington (CNN) Jerome Corsi's attorney said Thursday that it's clear Corsi is being investigated by a federal grand jury but does not believe he will be indicted.

The attorney, Larry Klayman, spoke at a federal courthouse in Washington after another client of his, Corsi's stepson Andrew Stettner, testified to the grand jury run by special counsel Robert Mueller.

Stettner's testimony was "brief," Klayman said. Stettner's questioning in front of the grand jury focused on what Corsi has previously outlined, Klayman said -- that investigators were interested in a direction Stettner received from Corsi to scrub a computer.

Klayman added that no documents had been deleted, and Corsi has maintained he wanted to recycle the computer rather than hide information.

Grand jury proceedings are secret -- closed to the public and even witnesses' attorneys. However, witnesses can speak about their testimony afterward, and on Thursday, Klayman spoke to reporters on Stettner's behalf.

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