Citing witness accounts., Reuters reports on Monday, Ukraine’s President Volodymyr Zelensky's office was destroyed by a missile strike.

In this explosion in Kyiv, clouds of black smoke can be seen rising from buildings in city's centre, witnesses report.

Mayor Vitali Klitschko said: “Several explosions in the Shevchenskivskyi district - in the center of the capital.” “Details later.”

Also read: Crimea bridge blast: Russian Presi. Putin accuses Ukraine, calls it terrorism

Market reaction

Risk sentiment is taking a fresh hit, as losses in the S&P 500 futures exceed 0.50% so far. The US dollar index jumps to test 113.00, up 0.13% on the day.