India, Sept. 5 -- Donald Trump's former adviser-turned-critic, John Bolton, is reportedly under scanner for "potential" unauthorised retention or removal of classified information, a probe that led to an FBI search at his residence last month.

The search warrant application cites Espionage Act among the two possible violations, Reuters reported, citing court documents over the federal investigation made public on Thursday.

On August 25, the federal bureau of investigation (FBI) conducted searches at the residence of John Bolton, a raid that was linked to the probe over the possible retention or removal of classified information without permission. The Espionage Act makes sharing or collecting US national defence information without auth...