ISIS have claimed the deadly attacks in Brussels and released photographs showing jihadis handing out sweets to residents in Syria to celebrate the massacre in Europe.

Bags of sweets and other items were handed by militants to young children and men in the province of Deir Ezzor, eastern Syria.

The photos included a statement, describing how ISIS had distributed sweets to Muslims in 'joy of the blessed attack against the Crusaders in Brussels.'

Bags of sweets and other items were handed by militants to young children and men in the province of Deir Ezzor, eastern Syria

No women are shown in any of the photos and the men handing out the sweets appear to be wearing shoulder holsters

No women are shown in any of the photos and the men handing out the sweets appear to be wearing shoulder holsters.

The news comes as the death toll for the Brussels attacks was confirmed to have risen to 34.

Dozens of people are believed to be missing or wounded following the horrific attacks which targeted people at the check-in at Brussels' main airport as well as a metro train carriage.

ISIS has also threatened to hit the UK 'harder and more bitter' after claiming responsibility for the Brussels bombings today.

Britain has ramped up security with armed officers taking to the streets near major landmarks, train stations and airports.

The photos included a statement, describing how ISIS had distributed sweets to Muslims in 'joy of the blessed attack against the Crusaders in Brussels'

One man takes a handful of sweets from an ISIS fighter as the group celebrated the attacks

The explosions come just a day after the Belgium Interior Minister warned of possible revenge attacks after the arrest of Paris massacre suspect Salah Abdeslam in the city last week.

The heightened police presence comes after at least 34 people were killed and many more left injured in a series of bomb attacks inside an airport terminal and Metro station in the Belgian capital.

The explosions come just a day after the Belgium Interior Minister warned of possible revenge attacks after the arrest of Paris massacre suspect Salah Abdeslam in the city last week.

A major manhunt is underway for an ISIS suspect in a white coat and black hat who fled Brussels Airport after the two explosions ripped through the terminal in a suicide bomb attack this morning, killing 14 people and injuring dozens of others.

Police issued a wanted notice for the man who was seen on CCTV pushing a luggage trolley through the check-in area with two other suspects minutes before the blasts.

His alleged accomplices were wearing black gloves on their left hands, which security sources say would have hidden the triggers for their explosive vests.

The two men blew themselves up while the third suspect is believed to have left a nail bomb and fled, according to De Standaard.

First picture: These three men, pretending to be air passengers, are believed to the terrorists who have carried out the Brussels airport

A soldier walks through debris after two explosions rocked a terminal building at Brussels Airport

Terrified passengers at Brussels Airport have told how there 'just blood' everywhere and likened scenes after the bomb blast to the 'apocalypse'