MOSCOW: At least sixty people have been killed after gunmen stormed a concert hall near Moscow on Friday in one of the deadliest attacks on Russia in decades.

Gunmen opened fire at a rock concert leaving dead and wounded before a major fire spread through the theater, Moscow鈥檚 mayor and Russian news agencies reported.

Authorities said a hunt had been launched for the attackers and that a 鈥渢errorism鈥� investigation had been launched.

Attackers dressed in camouflaged outfits entered the building, opened fire and threw a grenade or incendiary bomb, according to a journalist for the RIA Novosti news agency who was at the scene.

Russian authorities said 145 people were injured in the incident that took place in Crocus City Hall.

The attack has been widely condemned.

The Kremlin said President Vladimir Putin had been informed minutes after the assailants went into the large music venue which can accommodate 6,200 people.

鈥淭he president is constantly supplied by all relevant services with information about what is happening and the measures being taken,鈥� Kremlin spokesman Dmitry Peskov told reporters.

US intelligence confirmed a claim by Daesh that it was behind the attack, but a spokesman for investigators said that it was too early to make an assessment on who was behind the incident.

But a source close to the Russian probe told Arab News that investigators are inclined to exclude versions of Ukraine and Daesh involvement.

However, a number of leading Russian experts believe that the terrorist attack is the work of the Ukrainian special services. In their view, without the help of Western intelligence agencies, it is unlikely that Ukrainians would have been able to plan and carry out this attack.

The US presidency called the attack 鈥渢errible鈥� but said there was no immediate indication of any link to the war in Ukraine.

A US intelligence official told The Associated Press that US intelligence agencies had learned Daesh鈥檚 branch in Afghanistan was planning an attack in Moscow and shared the information with Russian officials.

On March 7, the US Embassy in Moscow said it was 鈥渕onitoring reports that extremists are planning to attack large gatherings鈥� of people in the Russian capital, 鈥渋ncluding concerts鈥�.

Putin denounced the Western warnings as an attempt to intimidate Russians. 鈥淎ll that resembles open blackmail and an attempt to frighten and destabilize our society,鈥� he said earlier this week.

Moscow mayor Sergei Sobyanin confirmed there were deaths in what he called a 鈥渢errible tragedy鈥� at the concert by Russian rock band Piknik.

鈥淚 offer my condolences to the families of the dead,鈥� said Moscow鈥檚 mayor as a major security operation was launched around the theater and nearby shopping mall.

Sobyanin said he had canceled all public events in Moscow for the weekend.

Russia鈥檚 foreign ministry labeled the incident a 鈥渢errorist attack鈥� that had to be condemned.

Fire quickly spread through the Crocus City Hall, north of the Russian capital, where the theater can hold several thousand people and has staged several concerts by top international artists, according to the reports.

Automatic gunfire was used on the audience, the RIA Novosti journalist reported.

鈥淧eople who were in the hall were led on the ground to protect themselves from the shooting for 15 or 20 minutes,鈥� the journalist was quoted as saying.

People started crawling out when it was safe, the journalist reported, adding that security forces were at the scene.

About 100 people escaped through the theater basement while others were sheltering on the the roof, the emergency services ministry said on its Telegram channel.

Telegram news channels Baza and Mash, which are close to security forces, showed video images of flames and black smoke pouring from the concert hall.

Other images showed two men walking through the hall with at least one person left on the ground near the entrance.

Spectators were also seen hiding behind seats or trying to escape.

Russia鈥檚 foreign ministry spokeswoman Maria Zakharova said it had been a 鈥渢errorist attack.鈥�

鈥淭he whole international community must condemn this odious crime,鈥� she said on Telegram.

The Ministry of Education recommended that all educational institutions in the capital region announce unscheduled holidays in the coming days.

萝莉视频鈥檚 foreign ministry issued a statement on Friday condemning the attack.

TASS news agency said that SOBR and special police forces and the OMON anti-riot squad had been sent to the Crocus hall.
It added that all the members of the rock band had been evacuated safely.

Orthodox church leader Patriarch Kirill was 鈥減raying for peace for the souls of the dead,鈥� said his spokesman Vladimir Legoyda.

鈥� With input from Reuters, AP, AFP