"We can confirm two US citizens were detained in Novorossiysk. We have no higher priority than the protection of US citizens abroad. Due to privacy considerations, we do not have any additional information at this time," the embassy's spokeswoman, Andrea Kalan, said.
Both the Russian Foreign Ministry and the US Department of State have already confirmed the information.
When asked to comment on related reports, the Kremlin spokesman, Dmitry Peskov, said on Wednesday he had no information on the issue.
Media reports emerged on Wednesday that two US volunteers of the Mormon Church of Jesus Christ of Latter-day Saints had been detained on March 1, during a church meeting in Novorossiysk. A local court subsequently ruled that they were guilty of violating border entry regulations.