This is all from BBC News' live page on the events in Tunis. Before we go, let us remind you of the main facts:

• At least 19 people, including 17 tourists, have been killed in an attack on the Bardo Museum in Tunis.

• A number of people were trapped inside the museum while the attacks went on, and were freed after two hours.

• Tourists from Germany, Poland, Italy and Spain were killed, as well as two Tunisians.

• Two gunmen were killed. Up to three associates may be on the run.

• No group has yet claimed responsibility for the attack.

• Tunisia's President calls the attack "a horrible crime".

• Demonstrators are gathering in central Tunis for an anti-terror protest.

There will be plenty more on events in Tunis elsewhere on the BBC website over the coming hours.

Image source, Getty Images

tweets:, external Demonstration in front of the municipal theatre against terrorism is now # Tunisia

Here's another image of the anti-terror demonstration in central Tunis. The crowds are reportedly chanting: "Tunisia is free, terrorism out."

Image source, Twitter

Tunisian radio station Mosaique FM quotes President Beji Caid Essebsi as saying the attack on the Bardo Museum was a "huge disaster" and that the country must "enter a mobilisation phase" to counter future terror threats.

Image source, Getty Images

Groups of young people have started arriving outside a theatre on Avenue Bourguiba, in the centre of Tunis, in a show of strength after the attack. Many are waving flags and carrying placards.

Image source, Twitter

Image source, Twitter

Mr Kerry goes on to say: "We commend Tunisian authorities' rapid response to today's wanton violence and their efforts to resolve the hostage situation and restore calm. The United States stands with the Tunisian people at this difficult time and continues to support the Tunisian government's efforts to advance a secure, prosperous, and democratic Tunisia."

US Secretary of State John Kerry says: "The United States condemns in the strongest possible terms today's deadly terrorist attack at the National Bardo Museum in Tunis, where gunmen killed 19 people and wounded more than 20 others. We extend our heartfelt sympathy to the victims' families and loved ones."

Image source, EPA

A statement has been put out on behalf of United Nations Secretary General Ban Ki-moon: "The secretary-general condemns in the strongest terms today's attack against the Bardo Museum in central Tunis and deplores the loss of life. He conveys his deepest condolences to the families of the victims of this deplorable act."

Image source, AFP

Youssef Cherif, a Tunisian blogger, writes:

Image source, Twitter

Tweets: , externalI express the solidarity of France to Tunisia. Every time a terrorist crime is committed, anywhere , we are all concerned

A Tunisian member of parliament, Sayida Ounissi, tweets, external that an extraordinary session of parliament will be held inside the Bardo Museum at 20:30 local time (19:30 GMT).

In that interview, Tunisia's tourism minister also said, external that the country's tourism industry wanted to focus more on "cultural tourism, valorising our archaeological sites like Carthage...and the Bardo Museum".

Tunisia's Tourism Minister Selma Elluni Rekik told Italian news agency Ansa, external on Tuesday that the country was completely safe for tourists. She said there was "no security problem in Tunisia".

tweets, external: #Ennahdha stresses that this crime will not break our people's will and will not undermine our revolution and our democracy.

The Bardo Museum, a former palace, is home to an exceptional collection of Roman mosaics. It is a major draw for Tunisia's tourists, who numbered 6.1 million last year.

The French President, Francois Hollande, has spoken to his Tunisian counterpart. Mr Hollande made reference to the terror attacks in Paris in January, which killed 17 people. He said: "When it comes to human life we are incredibly crushed by the terrorist machine. We had these painful events in France in January and it's true today in Tunis as it was in Copenhagen, we are all affected."

Here's another reminder of where exactly the attack took place. The Bardo Museum is very close to the Parliament building, where some reports in Tunisia say a new anti-terror law was being discussed.

Image source, Google

The French newspaper Le Monde has spoken to a journalist, external who was outside the Bardo Museum when the attack was taking place. She spoke of an "incredibly tense" atmosphere which was relieved when, she says, around 100 people were freed.

tweets: , externalMore than ever, France and its allies must fight without weakness terrorist barbarism wherever it is.

BBC Arab Affairs editor Sebastian Usher says that while the identity of the gunmen has not yet been established, they are likely to be Islamic militants who are trying tried to derail Tunisia's democratic transition.