Robert Mueller.

Thirteen Russians have been criminally charged for interfering in the 2016 US election, the office of Robert Mueller, the special counsel, announced on Friday.

The indictment charges the so-called Internet Research Agency, a notorious Russian state-backed “troll farm”, along with two companies operating under the name “Concord,” and 13 Russian individuals.

The individuals listed as charged are Mikhail Ivanovich Bystrov, Mikhail Leonidovich Burchik, Aleksandra Yuryevna Krylova, Anna Vladislavovna Bogacheva, Sergey Pavlovich Polozov, Maria Anatolyevna Bovda, Robert Sergeyevich Bovda, Dzheykhun Nasimi Ogly, Vadim Vladimirovich Podkopaev, Gleb Igorevitch Vasilchenko, Irina Viktorovna Kaverzina, Yevgeny Viktorovich Prigozhin and Vladimir Venkov.

All were charged with conspiracy to defraud the United States. Three defendants were charged with conspiracy to commit wire fraud and bank fraud, and five defendants were charged with aggravated identity theft.

US intelligence agencies concluded that Russians mounted an attack on the US election system aimed at electing Donald Trump to the presidency.

Mueller is conducting a criminal inquiry into interference by Russians and possible collusion by Trump’s campaign. One Trump campaign aide has pleaded guilty to lying to the FBI. Two others have been charged with federal crimes.