Four people have been arrested over Wednesday's gun attack in Tunis which left over 20 people dead.
The Tunisian presidency says the arrests are over alleged direct links to the attack.
Two gunmen were killed as security services stormed a museum in the Tunisian capital - and at least one of them was reportedly known to authorities.
The UK has confirmed a British national was among the tourists killed.
And Prime Minister David Cameron says it only stiffens resolve in fighting terrorism.
IN: "This is...
OUT: ...they will."
DUR: 34 seconds
ALT:
And Prime Minister David Cameron says it is no coincidence that a country which is seeing democracy emerge from the Arab Spring had been targeted.
IN: "Well, of...
OUT: ...win through."
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