HALEIWA TOWN, HAWAII — The U.S. Marine Corps has confirmed reports that two CH-53 helicopters, each carrying six people, went missing off the coast of Hawaii's Oahu island Thursday night.

They said the aircraft are from Marine Heavy Helicopter Squadron 463, Marine Aircraft Group 24, 1st MAW (Marine Air Wing) in Hawaii.

The U.S. Coast Guard was asked to provide assistance around 11:40 p.m. after witnesses heard a loud bang and saw a fireball in the sky. The Coast Guard determined it to be an in-air collision that occurred during a nighttime training mission.

Debris was found two-and-a-half miles north of Haleiwa beach. As of Friday morning, the search area has expanded to about 6 miles off the shore. Search efforts may be hampered by 30-40 foot waves off the north shore of Oahu. The story is still developing.

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