May 3 (UPI) -- Two members of the U.S. Army were reported missing during a training event in Morocco on Sunday morning by the United States Africa Command.

The soldiers were participating in the U.S. military's largest Africa-based exercise, African Lion, when the soldiers went missing on Saturday night during near the Cap Draa Training Area, which is near the city of Tan Tan, Morocco, AFRICOM said in a press release.

Military officials said their disappearance is unrelated to the exercise, but rather than they had gone on a hike near the training range and may have slipped off a cliff into the ocean, The New York Times reported.

"U.S., Moroccan and other assets from African Lion immediately initiated coordinated search and rescue operations, including ground, air and maritime assets," AFRICOM said in the release.

"The incident remains under investigation and the search is on-going," the command said.