Ukrainian President Petro Poroshenko has called those responsible for the February 22 bombing of a pro-government rally in Kharkiv "terrorist scum."
"Today is memorial Sunday, but on this day terrorist scum revealed its predatory nature," Poroshenko said in a Facebook post. "This is a bold attempt to expand the territory of terrorism."
Authorities say at least two people were killed in the blast, while numerous others were injured. Ukrainian officials say four suspects have been arrested and that they were trained and armed in Russia.
Follow developments in Kharkiv via our newsroom here:
Kharkiv On Security Alert Following Deadly Blast At Peace March
Video report (in Ukrainian) from our Ukrainian Service on the scene following the deadly bomb attack in Kharkiv: