23 February 2015, 15:11 GMT
Ukraine's Secretary of the National Security and Defense Council, Oleksandr Turchynov has announced that the alleged organizer and five accomplices of the February 22 bombing in Kharkiv have been detained.
"Their weapons and explosives were seized, including plastic explosives, detonators and grenades," Turchynov announced.
In addition to the alleged organizer, five people who Kiev suspects are connected to the bombing have been detained, according to Turchynov.
Four people died and nine were injured on February 22 after a bombing took place at a rally in Kharkiv in support of the Kiev-led military operation against southeastern Ukraine's independence supporters.
