A man has been dragged out of the Trump-Putin news conference, moments before the leaders were due to speak.
Footage from the news conference showed the man -later identified as journalist Sam Husseini – holding up a piece of paper with the words “nuclear weapon ban treaty” written on it before what appeared to be a security guard grabbed and struggled with the man.
In the clip, the apparent security guard, who was wearing an ear-piece, tries to grab the paper off the man before taking him away.
Three other men – also wearing ear-pieces – escort the man away as the world’s media take pictures and film the incident unfolding before them.
According to the Associated Press news agency, a US Secret Service agent spoke to Mr Husseini before Finnish security removed him.
He was sitting among US news media at the time of the incident and told journalists in the room he was a reporter from American magazine The Nation.
The magazine has since issued a statement.
It read: “Sam Husseini, communications director of the Institute for Public Accuracy, received press accreditation from The Nation to cover the summit between President Donald Trump and Russian President Vladimir Putin in Helsinki.
“At a time when this administration consistently denigrates the media, we’re troubled by reports that he was forcibly removed from the press conference before the two leaders began to take questions.
“This is a developing situation that we will be following closely.”
The journalist appeared to tweet photos from the event before he was taken away by security.