Law enforcement officials arrested two men linked to last month's skirmish outside the Turkish ambassador's residence in Washington, D.C., the U.S. Marshals Fugitive Task Force said. Narin is charged with felony aggravated assault and a misdemeanor threat charge, and Yildirim faces misdemeanor charges of assault with significant bodily injury and aggravated assault and a misdemeanor threat charge.
The New York Times notes that this isn't the first time Erdogan's security detail has misbehaved on USA soil. Newsham referred all questions regarding extradition to the State Department but said that all of the foreign suspects would be arrested should they ever attempt to enter the United States.
"When you have folks that are peacefully protesting here in Washington, D.C., which is a place where we welcome peaceful protests, and they're attacked for no reason, we think it's extremely important", the police chief said.
It was not clear if the men were supporters of Erdogan, part of his security detail or protesters. Two other men were arrested at the scene - one for aggravated assault and the other for assaulting a police officer.
Police have spent the weeks since the melee identifying suspects with video technology.
Video shot from another angle appears to show the Turkish president getting out of a limo, looking at the protesters and speaking to one of his bodyguards just prior to the attack.
Neither the State Department nor the Turkish Embassy have commented on the new wave of arrests as of Thursday afternoon. "We make sure they are safe, but we also make sure they follow our laws", she said.
The May 16 skirmish, caught on video, left nine protesters injured outside the Turkish ambassador's residence and further strained ties at a time when the North Atlantic Treaty Organisation allies are in sharp disagreement over policy in Syria.
The New York Times reported that officials in the USA administration were privately furious over the brazen use of force against peaceful protesters -and Washington DC police officers - by Erdogan's men, and that the charges against them is part of the American punishment for the incident.
Outstanding warrants have been issued for the remaining 14 people - two Canadians and 12 Turkish citizens.
On the day of the violence, police detained two members of Turkish President Recep Tayyip Erdogan's security detail but released them shortly afterward.
He called on those who have not been arrested to travel to the US and present themselves. Demonstrators were protesting Erdogan's increasingly authoritarian regime outside the Turkish ambassador's residence when a group of men stormed their picket line and started throwing punches.
The protesters, he said, "were not physically aggressive in any way, nor were they even physically proximate to the pro-Erdogan contingent".
Toronto's Ahmet Dereci, a devoted supporter of Turkish president Recep Tayyip Erdogan, was captured on video joining Erdogan's bodyguards in a May attack that sent nine people to the hospital and became an global incident.