Donald Trump's ex-national security adviser has pleaded guilty to mishandling classified material while compiling notes for a book.
John Bolton is a well-known critic of the President's administration and has accused Mr Trump of trying to "intimidate his opponents".
His case is being heard by a US federal court in Maryland, where he will be sentenced on October 28.
Bolton was indicted on 18 counts related to improper handling of the sensitive documents. He originally pleaded not guilty.
But, today, he admitted to one charge of illegal retention of classified data, some of which detailed top secret defence plans.
As a result, the former adviser could face up to five years behind bars.
A plea deal could allow him to receive a shorter sentence in prison, or avoid jail altogether, but it is not guaranteed.
If the judge hands him a longer prison sentence or a fine greater than $2.25million (£1.7million), Bolton is allowed to withdraw the guilty plea.
Bolton admitted the allegations laid against him were accurate after the judge read out the accusations in court.
"I did your honour," Bolton admitted when questioned whether he committed the crime, adding that he was "sorry".
Speaking outside the court, US Attorney Kelly Hayes said Bolton understand the delicacy of classified information and with whom he was able to share the sensitive documents.
She said: "He also knew the damage to national security that could be caused by mishandling that sensitive information.
"Nevertheless, as Mr Bolton just admitted, he put our national security at grave risk in violation of the law."
Bolton served as Mr Trump's national security adviser from 2018 until 2019 when he was sacked from Mr Trump's top team.
MORE TO FOLLOW...
Our Standards: The GB News Editorial Charter
