Authorities on Monday for the first time linked the violence to what they said were members of Islamist groups.

Kazakhstan said on Monday that foreign-trained Islamist radicals were among those who had attacked government buildings and security forces last week and that police had now detained almost 8,000 people to bring the situation under control.

Government buildings in several cities were briefly captured or torched last week as initially peaceful protests against fuel price increases became violent in the worst bout of violence in the Central Asian nation's post-Soviet history.

President Kassym-Jomart Tokayev sacked his cabinet, issued shoot-to-kill orders and declared a state of emergency in the oil-rich nation of 19 million. He also asked a Russian-led military bloc to send in troops, who the government says have since been deployed to guard strategic objects.

Tokayev was due to take part in a video conference of the bloc's leaders at 0700 GMT on Monday.

Authorities on Monday for the first time linked the violence to what they said were members of Islamist groups.

"As the events in Almaty and several other regions of the country have shown, Kazakhstan has been subjected to armed aggression by well-coordinated terrorist groups trained abroad," the foreign ministry said in a statement.

"According to preliminary data, the attackers include individuals who have military combat zone experience in the ranks of radical Islamist groups."

It did not name any specific groups.