HONOLULU (AP) — Military officials have declared three soldiers dead after their Black Hawk helicopter crashed off Hawaii during a nighttime training mission earlier this month.

The Armed Forces Medical Examiner says 1st Lt. Kathryn Bailey of North Carolina, Staff Sgt. Abigail Milam of Kentucky and Sgt. Michael Nelson of Tennessee are dead after confirming their DNA among debris recovered from the Aug. 15 crash. The three were riding in the helicopter with two others when it crashed off of Oahu.

Chief Warrant Officer 2 Stephen Cantrell of Texas and Chief Warrant Officer 3 Brian Woeber of Alabama have not been found.

Search-and-rescue operations were suspended Aug. 21.

The U.S. Navy, the U.S. Coast Guard and the 25th Infantry Division are working on recovery and salvage operations.

The crash is still under investigation.