TOKYO (AP) — The Latest on a U.S. Navy ship collision (all times local):

7:45 a.m.

Japanese broadcaster NHK reports that one person is injured and seven others unaccounted on a U.S. Navy ship after it collided with a merchant vessel in waters off Japan.

NHK footage on Saturday morning showed a person in a stretcher being taken up to a helicopter from the deck of the USS Fitzgerald.

The Navy said that the USS Fitzgerald collided with a merchant ship 56 nautical miles southwest of Yokosuka, Japan. A U.S. defense official said there is flooding in three compartments of the Fitzgerald.

The U.S. 7th Fleet says on its Facebook page that it is working with the Japanese Coast Guard to conduct a medical evacuation for a sailor by helicopter, and that there are currently no reports of deaths.

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7:15 a.m.

A U.S. Navy destroyer has collided with a merchant ship off the coast of Japan, the U.S. military said, and there have been injuries.

The U.S. 7th Fleet said on its Facebook page that the collision was with Philippine-flagged merchant vessel ACX Crystal. It says the Japanese Coast Guard is on scene.

Live footage shot from a helicopter Saturday morning by Japanese broadcaster NHK showed heavy damage to the mid-right side of the Navy ship, which appeared to be stationary in the water. People were standing on various parts of the deck.

The Navy said that the USS Fitzgerald collided with a merchant ship 56 nautical miles southwest of Yokosuka, Japan. A U.S. defense official said there is flooding in three compartments of the Fitzgerald, and there were injuries.

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7 a.m.

A U.S. Navy destroyer has collided with a merchant ship off the coast of Japan, the U.S. military said, and there have been injuries.

In a brief written statement, the U.S. Pacific Fleet in Hawaii said the Navy has requested assistance from the Japanese Coast Guard.

Live footage shot from a helicopter Saturday morning by Japanese broadcaster NHK showed heavy damage to the mid-right side of the Navy ship, which appeared to be stationary in the water. People were standing on various parts of the deck.

The Navy said that the USS Fitzgerald collided with a merchant ship 56 nautical miles southwest of Yokosuka, Japan, a city south of Tokyo that is home to a U.S. Naval base. A U.S. defense official said there is flooding in three compartments of the Fitzgerald, and there were injuries.

The Pacific Fleet said the extent of injuries and damage to the Fitzgerald are "being determined," and the incident is under investigation.