"I and my colleagues went to see the building where our Consul-General resided, and then we came up to our Consulate-General," Antonov said. "These are empty buildings, there are no Russian diplomats there. It is sad."
The ambassador, who is on a visit in San Francisco, said he felt that Russian citizens in the area suffered from lack of consular assistance.
The ambassador noted that no one approached the diplomats while they were examining the buildings.
"I didn’t want to provoke anyone. I want to know the condition of the Russian property," he said. "It is sad to see empty flagstaffs without Russian flags."
The administration of US President Donald Trump shut down the Russian Consulate General in San Francisco, and trade missions in New York City and Washington, DC last year in response to Moscow's decision to reduce the number of US diplomatic staff in Russia.
Officials from the US Department of State entered the official residence of the former Russian consul after breaking all the locks.
Moscow has said that the actions of the United States constituted a violation of international law, including the Vienna Convention on Diplomatic and Consular Relations.