A blast has struck the premises of the United States embassy in the Ukrainian capital, a spokesperson for Kiev’s police, Oksana Blischik, said.
"The explosion on the territory of the US embassy in Kiev is treated as an act of terrorism," Blischik wrote on her Facebook page.
She added that no injuries have been reported.
The police press service said the blast on the territory of the embassy, located in central Kiev’s Shevchenkovsky district, was reported at 00.05.
"Investigators found that an unknown person threw an unidentified explosive device on the territory of the diplomatic mission," TASS cited the police as saying.