The United States, in response to the actions taken against anti-government protesters on Maidan Nezalezhnosti in Kyiv, has imposed sanctions against a number of Ukrainian citizens.

"In response to actions taken against protestors on the Maidan in November and December of last year, the U.S. Embassy has revoked the visas of several Ukrainians who were linked to the violence," the U.S. Embassy in Ukraine said in a statement posted on its Web site on Wednesday.

However, the embassy said that "because visa records are confidential under U.S. law, we cannot comment on individual cases."

"We would like to underscore that the Department of State has broad authority to revoke visas based on information indicating that a visa holder may be inadmissible to the United States, and we are considering further action against those responsible for the current violence," the embassy said.