Members of the US Navy welcome aircraft carrier USS Ronald Reagan as she arrives at the US Navy base in Yokosuka, a suburb of Tokyo, on October 1, 2015. The US Navys Nimitz-class aircraft carrier USS Ronald Reagan (CVN 76) departed San Diego for Yokosuka on August 31 to replace the aircraft carrier USS George Washington (CVN 73) in the 7th Fleet area of responsibility. AFP PHOTO / Toru YAMANAKA (Photo credit should read TORU YAMANAKA/AFP/Getty Images)

A U.S. guided-missile destroyer collided with a merchant ship Saturday morning local time off the coast of Japan, U.S. 7th Fleet said in a news release.
The incident between the USS Fitzgerald and the merchant vessel happened at about 2:30 a.m. local time, about 56 nautical miles southwest of Yokosuka, Japan, according to the release.
In a tweet, the 7th Fleet said the vessel was the Philippine-flagged merchant ship ACX Crystal. The Navy asked and received help from the Japanese Coast Guard in responding to the collision.
Citing the Japanese Coast Guard, Japanese news agency NHK reported that seven crew members aboard the U.S. destroyer were missing and one was injured after the collision.
The 7th Fleet added in later tweets that no casualties have been reported. The ship is working with the Japanese Coast Guard to conduct a medical evacuation, though the extent of injuries is still being determined.
The ship experienced some flooding, the …
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