AP Bangladeshi police and detective branch stand by the site where Cesare Tavella was gunned down

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The savage terror group – which has expanded its reach from Syria and Iraq to vast swathes of Africa and Asia - claimed responsibility for gunning down Cesare Tavella as he jogged home yesterday in the capital Dhaka. The 51-year-old was killed when two gunmen claiming to be the “soldiers of the Caliphate in Bangladesh" fired three shots. The jihadi assassins used silencer-mounted guns "after pursuing him in one of Dhaka's streets”, the ISIS affiliate said.

But, in a chilling warning to all Westerners, the group wrote on Twitter: "We say to all citizens of the Crusader coalition, you will not be safe in the Muslim lands, and this is just the beginning."

We say to all citizens of the Crusader coalition, you will not be safe in the Muslim lands, and this is just the beginning ISIS

The warning includes travellers to Morocco, Turkey, Egypt and Malaysia, where Muslims make up a majority of the population. In June, the Foreign and Commonwealth Office issued fresh travel advice warning that terrorist groups were actively plotting attacks in Turkey. Holidaymakers visiting Turkish beach resorts were said to be at risk of kidnap, suicide bombings, car bombings, rocket attacks and improvised explosives. The nation, which has a 98.9 per cent Muslim population, has also been rocked by Western Islamic fanatics attempting to enter Syria to join ISIS, as well as homegrown terror groups striking in acts of rebellion.

AP The Islamic State militant group claimed responsibility for the attack

AP Mr Tavella was murdered in the diplomatic quarter of Bangladesh's capital

The Italian embassy in Dhaka has urged its citizens to avoid hotels and restaurants in the city. "The responsibility for the murder claimed by ISIS is yet to be verified," the embassy said in a statement.

Mr Tavella travelled to Bangladesh in May to work with a faith-based development charity, ICCO. The organisation said in a statement: “We are deeply saddened by the shocking news of the death of our dear colleague Cesare Tavella. “Cesare was a hard-working professional, committed to help the people of Bangladesh. “He was respected and loved by all his team members in the country office and field offices around the country. “We are saddened by the news and we extend our heartfelt condolences to the family and loved ones he leaves behind.”

GETTY The body of Italian citizen Mr Tavella

Bloggers in Bangladesh have been targeted in a wave of brutal killings in recent months. Extremists have butchered people using machetes, knives and meat cleavers. But this is the first ISIS attack in the country.