SAN FRANCISCO — Last year, when Facebook disclosed a sweeping, coordinated disinformation campaign carried out by Russian agents, the company presented the first evidence of a new kind of information warfare.

Now mischief makers in other countries appear to be following the Russian playbook.

Facebook said on Friday that it had identified and removed a new influence network that had originated in Iran. It was the second time this year that a disinformation effort targeting people in the United States and Britain had been tied to Iranians.

The company took down more than 82 pages, groups and accounts, including 30 Facebook pages, 33 Instagram accounts and three Facebook groups, it said. About one million users in the United States and Britain followed those accounts.

The latest disinformation campaign, which Facebook said was discovered last week, was much smaller than the Russia-linked information operations before and after the 2016 presidential election. Back then, millions of Facebook and Instagram users viewed divisive ads and disinformation that investigators say were created with the aim of widening political and social divisions among Americans.