U.S Secretary of State discusses terror attacks with Belgian Prime Minister

Police in Brussels arrested six people in overnight raids in the city.

It's been confirmed today that two Americans and one Briton died in the attacks.

The British Prime Minister David Cameron has tweeted about the news that a Briton has been killed in the Brussels attacks.

The Prime Minister said he's "deeply saddened" to hear of the death of David Dixon.

He also has said his "thoughts and prayers are with his friends and family".

US Secretary of State John Kerry - has a message for those who support so-called Islamic State: “We will not be intimidated.

“We will not be deterred and we will come back with greater resolve, with greater strength and we will not rest until we have eliminated your neolistic beliefs and cowardice from the face of this Earth.”

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The six arrests were made in the North East suburb of Schaerbeek in the same district the three confirmed suspects from Tuesday's attacks emerged.

Over the last few days, Belgian authorities having been raiding several homes in search of evidence and on Wednesday they found chemicals required for the home-made suicide bombs used by both the Brussels and Paris attackers, also in an apartment in Schaerbeek.

Tuesday's attacks have been blamed on a failure in Belgium's security intelligence.

Journalist with the Independent Newspaper John Lichfield says the country's crime-fighting capabilities are in disarray: “Six different police forces, all these regional differences, very poor funding,

A state that has many many difficulties in many many divisions, so there is a particular Belgian problem.”

Meanwhile in Paris the interior minister, Bernard Cazeneuve confirmed that police arrested a French national saying only that he was thought to be at an advanced stage of orchestrating a terror plot.