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A Coast Guard official says the cause of the engine-room fire on the Carnival cruise ship Triumph was a leak in a fuel oil return line.
In a teleconference Monday, Cmdr. Theresa Hatfield estimated that the investigation of the disabled ship would take six months.
She said investigators have been with the ship since it arrived Thursday in Mobile, and interviews have been conducted with passengers and crew.
The ship left Galveston, Texas, on Feb. 17 for a four-day trip to Mexico. The fire paralyzed the ship early Sunday, leaving it adrift in the Gulf of Mexico until tugboats towed it to Mobile.
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