Hillary Clinton regularly instructed her housekeeper to print government emails and documents when she was secretary of state – including classified materials, according to FBI memos.

FBI memos show Marina Santos often handled sensitive information, but didn't have the security clearance to do so, the New York Post reports.

The housekeeper was paid to look after Clinton's home in Washington, known as Whitehaven.

But the Democratic nominee also trusted the Filipina immigrant with state secrets, asking her aides to forward messages and attached documents they sent her on to Santos to print at home.

Republican presidential nominee Donald Trump blasted the arrangement on Sunday morning, telling a Sioux City, Iowa crowd that Clinton was 'completely jeopardizing the national security of the United States.'

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Hillary Clinton (above) regularly instructed Marina Santos (pictured right on Friday outside Clinton's Washington home) to print government emails and documents when she was secretary of state – including classified materials, FBI notes say

Republican presidential nominee Donald Trump blasted Clinton's housekeeper arrangement on Sunday morning, telling a Sioux City, Iowa crowd that she was 'completely jeopardizing the national security of the United States'

Clinton asked Santos to print drafts of her speeches, confidential memos as well as 'call sheets' – talking points and background information prepared before calls to foreign leaders, according to the Post.

'Pls ask Marina to print for me in am,' Clinton emailed Huma Abedin, about a redacted message from 2011 which was marked sensitive, but unclassified.

In a classified email from 2012 about the new president of Malawi, Clinton's aide Monica Hanley told her: 'We can ask Marina to print this.'

The housekeeper also had access to the Sensitive Compartmented Information Facility (SCIF) – an extremely secure room agents set up at Whitehaven.

Santos did not have clearance for the SCIF, yet 'collected documents from the secure facsimile machine for Clinton,' according to FBI notes.

The bureau noted that Clinton periodically received the Presidential Daily Brief, a top secret document prepared by the CIA and other intelligence agencies.

FBI memos show Marina Santos (pictured outside Clinton's home on Friday carrying dry cleaning) often handled sensitive information, but didn't have the security clearance to do so

But Clinton was never asked to hand over the computers Santos received the emails on, the printed documents or the printer she used to print them.

In the final days of the campaign, Clinton has faced extraordinary challenges after the FBI confirmed plans to renew its focus on the former secretary of state's email practices.

Clinton has said she made a 'mistake' over her use of a private email server for work correspondence while she was US secretary of state.

An FBI investigation concluded in July that Mrs. Clinton and her staff had been 'extremely careless' with classified information, but there was no evidence she knowingly shared sensitive material and criminal charges were not recommended.

Trump has claimed Clinton should be in jail over the scandal and a special prosecutor will be instructed to investigate her if he is elected president

Just over a week before election day, FBI director James Comey announced the case was being reopened after new emails 'pertinent' to the investigation had been discovered.

Trump predicted Sunday that 'there's little doubt that FBI director Comey and the great special agents within the FBI will be able to collect more than enough evidence to garner indictments against Hillary Clinton and her inner circle.'

'We could very well have a sitting president under felony indictment, and ultimately a criminal trial,' he said.

Clinton's 'scandals and controversies,' he said, would 'continue through out her presidency' and 'make it virtually impossible for her to govern.'

'Let's hope we don't have to think about it.'

The unearthed emails were found during the FBI's investigation into former New York Democratic congressman Anthony Weiner, who is accused of sending sexually explicit messages to a 15-year-old and is married to Mrs Clinton's aide Huma Abedin.

Donald Trump has claimed Clinton should be in jail over the scandal and a special prosecutor will be instructed to investigate her if he is elected president.

In a statement, Republican National Committee Chairman Reince Priebus blasted Clinton for her 'pattern of dangerous and unethical behavior.'

'We've known for months that Hillary Clinton egregiously mishandled classified information and jeopardized national security by setting up a secret email server but the revelations she asked her maid to print out classified material at her home gives the word reckless a whole new meaning,' he said.