Libyan government adviser Abdul Basit Haroun says Islamic State (IS) fighters are being smuggled into Europe by gangs in the Mediterranean on boats filled with migrants.

The Islamic State group on Thursday released an audio message purportedly from its leader, Abu Bakr al-Baghdadi, who has not been seen or heard from in months.

Nine people have been arrested in connection with a gun attack in Tunis that saw 23 people killed on Wednesday, including 20 foreign tourists

One of the gunmen who killed tourists and others at a prominent Tunisian museum was known to the intelligence services but no formal links to a particular extremist group have been established, the prime minister says.

At least 19 people, including 17 foreign tourists are killed after gunmen targeted a museum in the Tunisian capital.