India, Oct. 11 -- The Justice Department is reportedly preparing to criminally charge US President Donald Trump's former National Security Adviser John Bolton, and a complaint or an indictment is likely to come as early as next week.

According to two people familiar with the case, a federal grand jury in Maryland has been hearing evidence for weeks on allegations that Bolton improperly stored classified national security materials at his home in Bethesda, Maryland, MSNBC reported.

The sources spoke on the condition of anonymity to discuss sensitive matters without authorization.

If charged, Bolton would become the third prominent Trump critic to face federal prosecution in just the past few weeks under what critics are calling an incre...