THREE bomb blasts shook the Belgian capital Brussels yesterday, leaving at least 34 people dead and some 200 injured amid horrific scenes.

Islamic State (Isis) claimed responsibility for the atrocities, which came just four days after the arrest of Salah Abdeslam, one of the alleged terrorists behind November’s Paris attacks, in the Molenbeek district of Brussels.

Belgian police released CCTV footage yesterday of the three men suspected of carrying out the attack in the airport.

One of the suspects is believed to be on the run. They had not identified the men when the Star went to press.

It was also only three days since an Isis suicide bomb attack in Istanbul which claimed five lives.

A suicide bomber struck at the American Airlines desk at Zaventem airport at about 8am, before a second device — reportedly hidden in a suitcase — went off. The two attacks killed 14 people.

In central Brussels a bomb exploded aboard an underground metro train at Maelbeek station, about a mile from the European Union headquarters, killing 20.

Two Kalashnikov rifles and an unexploded bomb belt were found at the airport after the attacks, while further bombs were reportedly discovered at other metro stations.

Police conducted raids across the city as people were told to stay off the streets. That order was rescinded at about 4pm.

Hundreds of flights in and out of Zaventem were cancelled, while security was tightened across Europe.

Downing Street said one British national was known to have been injured.

Belgian Prime Minister Charles Michel said: “In this tragic and dark moment for our country, more than ever I call everyone to show calm but also solidarity.”

King Philippe was set to address the nation yesterday evening.

French Prime Minister Manuel Valls said the attack showed Europe was “at war.”

French President Francois Hollande said: “Terrorists struck Brussels but it was Europe that was targeted — and all the world that is concerned.”

Mr Hollande also warned: “This war will be long” and that calm and clarity were needed.

Syria — on the front line of the fight against Isis — also condemned the attack, expressing “condolences and sympathy” with the victim’s families.

But the Foreign Ministry statement said the bloodshed was “an inevitable consequence of wrong policies and tolerance for terrorism to realise certain agendas” in the Middle East.

And Russian Foreign Ministry spokeswoman Maria Zakharova said the West’s politics of “double standards” had led to terrorist attacks and that frozen diplomatic relations between Nato and Russia have hampered the fight against terrorism.

In Britain, Labour Party leader Jeremy Corbyn said “I am extremely concerned for all caught up in unfolding events in Brussels.”

He expressed “solidarity with emergency services and those affected.”

Muslim Council of Britain Secretary General Dr Shuja Shafi said: “We are shocked to hear about the terror attacks in Brussels, coming as they did only a few days after the horrific atrocities in Istanbul.

“I hope the killers are brought to justice and face the full force of the law.”