The US President was sent a letter containing the lethal poison ricin last week. It was intercepted at a government mail facility and did not reach the White House. Now, a woman has been arrested while crossing the US/Canada border after being suspected of sending the letter. She was carrying a gun and was arrested by US authorities at the New York state border crossing.
A US law enforcement official reported the arrest on Monday, with Washington DC prosectors expected to bring charges against her.
She was arrested by Customs and Border Protection agents while crossing the US/Canada border.
No further details on the suspect have been released at this time.
But a US official told the New York Times on Saturday authorities were searching for a Canadian woman, who they believed to be connected to the attempt.
READ MORE: Trump health fears: Poisonous package addressed to White House intercepted by officials
It follows last week’s attempt on Mr Trump being intercepted by law enforcement, as all mail for the White House is screened offsite.
Two tests were conducted on the package to confirm whether it was laced with ricin.
The FBI’s Washington field office told CNN on Saturday: “The FBI and our US Secret Service and US Postal Inspection Service partners are investigating a suspicious letter received at a US government mail facility.
“At this time, there is no known threat to public safety.”
Ricin is a lethal poison derived from castor beans, and is highly dangerous.
Deadly doses of the substance start at 500 micrograms, which is an amount equal to the head of a pin.
Ricin has been used in attempts on US politicians before, with Shannon Richardson, an actresss, was convicted in 2014 for sending poisoned packages to then-President Barack Obama.
Ms Richardson was sentenced to 18 years in prison over the plot.
Mr Trump has been targeted throughout his presidency by assassins.
The President was escorted out of the White House in August after secret service shot a 51-year-old man outside, who claimed he was armed.
In January, an Iranian MP placed a $3 million bounty on the President for “anyone who kills” him in revenge for the death of Iranian general Qassem Soleimani.
In 2016, Michael Sandford, 19 at the time, attempted to wrestle a gun from a police officer and shoot Mr Trump at a Las Vegas rally.