Cruise lines are monitoring the unrest in Tunisia after the U.S. and other governments issued travel warnings for the country following the political protests and looting that resulted in the fleeing of the country's president last week.

Costa Cruises canceled the Costa Magica's scheduled call at Tunis Monday and replaced it with a call at Ajaccio in Corsica.

Costa said that it does have other ships calling at Tunisian ports over the next six weeks, but currently has no additional information regarding future port calls there.

MSC Cruises has two ships calling in the region in April, with the MSC Splendida and the MSC Fantasia calling in La Goulette on April 13 and April 19, respectively. MSC said that as of now, the calls will happen.

"MSC Cruises is closely monitoring the protests which escalated in Tunis and in the rest of the country," the Italian cruise line said. "MSC is always putting the safety and security of its guests before all considerations, and for this reason will dedicate the highest attention to the area in the next period."

Tunis' main port of La Goulette is not closed, but reports indicate that there is violence in the area. Time Magazine reported that looters raided several car dealerships near the port.

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