Four more lawsuits have been filed this year related to the Costa Concordia accident, according to Carnival Corp.'s 10-K annual report filed with the Securities and Exchange Commission.

One suit, filed by a group of 10 Spanish citizens, styled Gual vs. Carnival Corp., was filed in Miami-Dade Circuit Court.

Two others, Ankhimova vs. Carnival and King vs. Carnival, were filed in U.S. District Court in Southern Florida, while a fourth, Lynch vs. Carnival, was filed in U.S. District Court for Eastern California.

Plaintiffs generally have a year under maritime law to file suit after an accident. The Costa Concordia capsizing took place in mid-January last year.

Carnival also disclosed in its report that on Jan. 24, Costa was notified that the chief prosecutor of Grosseto, Italy, intends to charge Costa for acts committed by employees in connection with the Concordia incident.

If he proceeds, he will have to present evidence at a preliminary hearing later this spring, Carnival said.

Carnival also lists four other suits it faces related to the Costa Concordia incident that were filed in 2012.

Follow Tom Stieghorst on Twitter @tstravelweekly.

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