EXCLUSIVE: Special Counsel Robert Mueller's team is requesting that witnesses turn in their personal phones to inspect their encrypted messaging programs, sources tell CNBC.

EXCLUSIVE: Special Counsel Robert Mueller's team is requesting that witnesses turn in their personal phones to inspect their encrypted messaging programs, sources tell CNBC. https://t.co/spDmvMzbGP

— CNBC Now (@CNBCnow) June 6, 2018