US officials say they have taken action against an AI-powered information operation run from Russia, including nearly 1,000 accounts pretending to be Americans.

The accounts on X were designed to spread pro-Russia stories but were automated “bots” - not real people.

In court documents made public Tuesday the US justice department said the operation was devised by a deputy editor at Kremlin-owned RT, formerly Russia Today.

RT runs TV channels in English and several other languages, but appears much more popular on social media than on conventional airwaves.