As US officials were busy assessing Iran’s missile attacks in Iraq late Tuesday, messages began arriving from Iran saying one thing: We’re done.

Iran initiated contact through at least three back channels starting late Tuesday, including through Switzerland and other countries. There were “multiple messages and they were all the same,” a person familiar with the matter said. Iran wanted to convey their retaliatory action had ended — and was waiting to see how the US would respond.

The back-and-forth communication came as American officials were still determining the extent of the Iranian attacks, and were formulating plans for a response. In response, the US sought to communicate to Iran that its proxies in the region were of equal concern as the activities of the Iranian state, the person familiar said.