Iran says it has turned off two cameras monitoring the country's nuclear program.
Iran's Atomic Energy Organization made the announcement on Wednesday.
This comes after the International Atomic Energy Agency reported last month that Iran failed to provide credible explanations in the case of nuclear particles found at undeclared sites in the country.
The Iranian body said the IAEA did not appreciate the country's cooperation in the nuclear watchdog's inspections.
Iranian officials have not provided more details on the latest move, such as what facility's cameras were switched off.
It is also unknown what impact the move will have on the IAEA's activities.
Behrouz Kamalvandi, a spokesperson for the Iranian organization, said on state-run TV that it is considering more actions and hopes the IAEA will respond in kind to Iran's cooperation. He added that the IAEA should not show an inappropriate attitude.
The United States and other countries submitted a draft resolution to an IAEA board meeting held this week. It criticizes Iran's stance in response to questions about the discovered nuclear substances.