Russian border guards fired into the air to stop vehicles carrying 27 Chinese who were trying to slip across the border into Ukraine, the ITAR-Tass news agency reported Tuesday.
No one was injured in the incident, the report said, citing a spokesman for the Federal Security Service. The report did not specify when the incident occurred or where along the 1,575-kilometer (975-mile) border.
According to the report, Russian border guards fired nine times into the air after a truck and a car carrying the Chinese ignored the guards' orders to stop.
Russia and Ukraine are prime routes for people from Asia trying to enter Western Europe illegally.
Russia has delivered three divisions of anti-aircraft missile systems S-300PM-2 to Syria. These systems differ from the classic S-300