Five Japanese as well as visitors from Italy, Poland and Spain were among the dead in the noon assault on Bardo museum inside the heavily guarded parliament compound in central Tunis, Prime Minister Habib Essid said.
              
"They just started opening fire on the tourists as they were getting out of the buses ... I couldn't see anything except blood and the dead," the driver of a tourist coach told journalists at the scene.
              
Scores of visitors fled into the museum and the militants – who authorities did not immediately link to any extremist group - took hostages inside, officials said. Security forces entered around two hours later, killed two militants and freed the captives, a government spokesman said. A police officer died in the operation.
              
The attack on such a high-profile target is a blow for the small North African country that relies heavily on European tourism and has mostly avoided major militant violence since its 2011 uprising to oust autocrat Zine El-Abidine Ben Ali.
              
Several Islamist militant groups have emerged in Tunisia since the uprising, and authorities estimate about 3,000 Tunisians have also joined fighters in Iraq and Syria -- igniting fears they could return and mount attacks at home.
              
"All Tunisians should be united after this attack which was aimed at destroying the Tunisian economy," Prime Minister Essid declared in a national address.
              
The local stock exchange dropped nearly 2.5 percent and two German tour operators said they were cancelling trips from Tunisia's beach resorts to Tunis for a few days.
              
Accor, Europe’s largest hotel group, said it had tightened security at its two hotels in Tunisia.
              
U.S. Secretary of State John Kerry joined leaders from Europe condemning the attack and said Washington continued "to support the Tunisian government's efforts to advance a secure, prosperous, and democratic Tunisia."
              
Television footage showed dozens of people, including elderly foreigners and one man carrying a child, running for shelter in the museum compound, covered by security forces aiming rifles into the air.
              
The Tunisian premier said 17 tourists were killed, including four Italians, a French citizen, a Pole, two Colombians, five Japanese, an Australian and two Spaniards. He had previous mentioned a German fatality, but did not mention that in later statements. Two Tunisians were killed.

The museum is known for its collection of ancient Tunisian artifacts and mosaics and other treasures from classical Rome and Greece. There were no immediate reports that the attackers had copied Islamic State militants in Iraq by targeting exhibits seen by hardliners as idolatrous.

              
Bardo's white-walled halls set in the parliament compound are one of the most popular tourist attractions in the Tunisian capital. Many tourists come for day trips to Tunis from nearby Mediterranean beach resorts.
              
Shocked but defiant, hundreds of Tunisians later gathered in the streets of downtown Tunis waving the country's red and white crescent flag, and chanting against terrorism.
              
"I pass this message to Tunisians, that democracy will win and it will survive," President Beji Caid Essebsi said in a television statement. "We will find more ways and equipment for the army to wipe out these barbarous groups for good." 

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