Brussels attacks: Isis supporters launch poll asking where they should target next - and UK comes out on top

Terror group asked 'what will the colour of the Eiffel Tower be next' on online forum

The Eiffel tower is lit up with the Belgian flag colours of red, yellow and black on March 22, 2016 in Paris, France (AP)

Isis supporters have apparently been celebrating the terror attacks in Brussels by asking their followers to suggest which country they should target next - and the UK came out on top.

On an online forum purporting to be run by members of the extremist group, a user set up a poll asking: “What will the colour of the Eiffel Tower be in the next attacks?”

And disturbingly, the UK came out top in the survey, with half of the terror groups’ online supporters backing it as their number one choice for an attack.

The question was asked after the Eiffel Tower was lit up in the colours of the Belgian flag in solidarity with Brussels, which was hit earlier this week by a terror attack which killed at least 31 people.

Zaventem airport and Maalbeek Metro Station in the city were targeted by three explosions by suicide bombers on Tuesday morning.

The US and Russia were also voted as prime targets for an assault, Mail Online reports.

One user tweeted: “The Islamic State will attack London, Washington, Rome and all the infidels' capitals”.

Another said: “The Crusaders are blundered and confused. Yesterday Paris, today Brussels, and they don't know where will be the next attack."

Isis claimed responsibility for the attacks on the capital city which they said were revenge for Belgium’s participation in co-ordinated air strikes against their positions in Syria and Iraq.

A spokesman for the Islamic extremist group said: “Fighters opened fire inside Zaventem Airport, before several of them detonated their explosive belts, as a martyrdom bomber detonated his explosive belt in the Maalbeek Metro station."

Isis supporters celebrated the attacks on Twitter using the hashtag #Brusselsonfire in Arabic - similar to a #Parisonfire trend seen when the French capital was hit in November.