MOSCOW: Russian President Vladimir Putin on Saturday called an attack on a concert hall that killed more than 130 a “barbaric terrorist act” and vowed harsh retribution to all those involved. The Islamic State (IS) group said Saturday four of its militants carried out the attack. “The attack was carried out by four IS fighters armed with machine guns, a pistol, knives and firebombs,” IS said on one of its Telegram channels, adding that the attack was part of “the natural context of the raging war” with “countries fighting Islam”.

In a televised address, Putin said all four gunmen had been arrested before they had a chance to cross the border into Ukraine. “I am speaking to you today in connection with the bloody, barbaric terrorist act, the victims of which were dozens of innocent, peaceful people,” Putin said in his first public remarks since the attack. “All four perpetrators of the terrorist attack who shot and killed people have been detained. They were traveling towards Ukraine where, according to preliminary information, they had a window to cross the border,” the Kremlin leader said.

HH the Amir of Kuwait Sheikh Mishal Al-Ahmad Al-Jaber Al-Sabah sent a cable of condolences to Putin expressing heartfelt solace on the victims of the terrorist attack. HH the Amir affirmed Kuwait’s strong condemnation of this ugly terrorist act that targeted innocent people. He wished the injured quick recovery and the deceased the Almighty’s mercy. HH the Prime Minister Sheikh Dr Mohammad Sabah Al-Salem Al-Sabah sent a similar cable of condolences to Putin.

Kuwait’s ministry of foreign affairs earlier expressed strong condemnation and denunciation of the terrorist attack. In a statement, the ministry, while emphasizing Kuwait’s condemnation of this terrorist act and its rejection of violence in all its forms, called on the international community to stand up to these terrorist acts that target civilians. It added Kuwait extends its condolences and sympathy to the families of the victims and to the Russian Federation, government and people, wishing speedy recovery to all injured in the attack.

Russia’s FSB security service said earlier the assailants had been “in contact” with people in Ukraine as they tried to flee the country. Russian investigators said Saturday the death toll from the shooting and fire at a Moscow concert hall had risen to 133 from an earlier figure of 115 dead. “While clearing the debris in the Crocus City Hall concert hall, the number killed as a result of the terrorist attack rose to 133 people. Search operations are continuing,” the Investigative Committee said in a statement on Friday’s attack.

Camouflaged gunmen opened fire at the packed Crocus City Hall in Moscow’s northern suburb of Krasnogorsk on Friday evening ahead of a concert by Soviet-era rock band Piknik in the deadliest attack in Russia for at least a decade. Russian authorities have called it a “terrorist attack”, but have not commented on the Islamic State’s claim. “Terrorists, murderers, non-humans will face the unenviable fate of retribution and oblivion,” said Putin, who declared Sunday a day of national mourning across Russia.

Some Russian lawmakers pointed to Kyiv, without providing evidence. “The main interested party could most likely be Ukraine and its patrons ... we can’t rule it out,” said senior Russian MP Andrey Kartapolov. Ukraine, which has been facing a Russian military offensive for the past two years, had “nothing to do” with the attack, according to a statement by presidential aide Mykhailo Podolyak on Telegram.

The Kremlin said the head of the FSB security service had informed Putin about the arrests, while authorities warned the number of fatalities was set to keep rising, with more than 100 still hospitalized and a search of the burnt-out venue ongoing. “FSB Director Alexander Bortnikov reported to the president on the detention of 11 people, including four terrorists involved in the terrorist attack at Crocus City Hall,” it said.

Russia’s Investigative Committee, which probes major crimes, said rescue workers were still working on site, pulling bodies from the building. The number of fatalities was likely to rise further, as the governor of the Moscow region said rescuers would continue to scour the site for “several days.”

Investigators said people died both from gunshot wounds and from smoke inhalation after a fire engulfed the 6,000-seater venue. “The terrorists used a flammable liquid to set fire to the concert hall’s premises, where spectators were located, including wounded,” the Investigative Committee said. Flames had quickly spread through the venue on Friday after reports of the mass shooting, with screaming concert-goers rushing to emergency exits.

Some filmed the gunmen from the upper floors as they appeared to methodically walk through the stalls shooting people, footage shared on social media showed.

Some 107 people were still in hospital on Saturday morning, according to Russia’s Emergency Situations Ministry. Russian Telegram channels, including Baza which is close to the security services, and a lawmaker said some of the suspects were from the central Asian nation of Tajikistan. In a statement, Tajikistan’s foreign affairs ministry said it had not received any information from Moscow about the involvement of its citizens.

In Moscow, residents formed long queues in the Saturday morning rain to donate blood, according to videos posted by state media outlets. Memorial posters featuring a single candle replaced advertising billboards at some Moscow bus stops, the RIA Novosti state agency reported. Major events were cancelled across the country, including a friendly football match between Russia and Paraguay set to take place in Moscow on Monday.

Statements of condemnation from world leaders continued to roll in. On Saturday, a spokesperson for Afghanistan’s foreign ministry said the Taleban “condemns in the strongest terms the recent terrorist attack in Moscow, Russia ... and considers it a blatant violation of all human standards.” Attention is also being focused on Russia’s powerful intelligence services in the wake of the attack.

Just three days before, Putin had publicly dismissed Western warnings of an imminent attack in Moscow as propaganda designed to scare Russian citizens. On March 7, the US embassy in Russia had issued a security alert saying it was “monitoring reports that extremists have imminent plans to target large gatherings in Moscow, to include concerts.” Washington said it had directly warned Russian authorities about a “planned terrorist attack” possibly targeting “large gatherings” in Moscow.

The United States had “shared this information with Russian authorities,” National Security Council spokeswoman Adrienne Watson said. But speaking to FSB chiefs last Tuesday, Putin said: “Recent provocative statements by a number of official Westerns structures about the possibility of terrorist attacks in Russia ... resembles outright blackmail and an intention to intimidate and destabilize our society.” – Agencies