U.S. cannot confirm use of chemical agents in Ukraine's Mariupol at this time- official

The United States cannot confirm the potential use of chemical agents by Russia in Ukraine's port city of Mariupol at this time, a senior U.S. defense official said on Tuesday. Ukrainian Deputy Defense Minister Hanna Malyar said the government was checking unverified information that Russia may have used chemical weapons while besieging Mariupol.

The official, speaking on the condition of anonymity, said the United States did not have information to confirm any movement of chemical agents by Russia in or near Ukraine.