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Associated Press
In this undated underwater photo released by Carabinieri (Italian paramilitary police) Friday, Jan. 20, 2012 two Carabinieri scuba divers swim next to the Costa Concordia cruise ship's bell, off the tiny Giglio island, Italy. The $450 million Costa Concordia was carrying more than 4,200 passengers and crew when it slammed into well-marked rocks off the island of Giglio after the captain made an unauthorized diversion from his programmed route. The ship then keeled over on its side. (AP Photo/Carabinieri)

ROME — The cruise captain who grounded the Costa Concordia off the Tuscan coast with 4,200 people on board did not relay correct information either to the company or crew after the ship hit rocks, the cruise ship owner's CEO said Friday as the search resumed for 21 missing passengers.

CEO Pierluigi Foschi told Italian state TV that the company spoke to the captain at 10:05 p.m., some 20 minutes after the ship ran aground on Jan. 13, but could not offer proper assistance because the captain's description "did not correspond to the truth."

Capt. Francesco Schettino said only that he had "problems" on board but did not mention hitting a reef.

Passenger video shown on Italian TV indicates crew members telling passengers to go to their cabins as late as 10:25 p.m. The abandon ship alarm sounded just before 11:00 p.m.

"That's because they also did not receive correct information on the gravity of the situation," Foschi said.

The $450 million Costa Concordia was carrying more than 4,200 passengers and crew when it slammed into well-charted rocks off the island of Giglio a week ago. Eleven people have been confirmed dead.

The Concordia shifted again on its rocky perch Friday, forcing the suspension of diving search operations for the 21 people still missing and raising concerns about the stability of the ship's resting place. But the search in areas above the waterline resumed in the evening after the ship was deemed stable.