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This is a representational image. In this photo, an Afghan National Army (ANA) soldier stands outside Combat Outpost (COP) Boston before a joint patrol with U.S. soldiers from 3/1 AD Task Force Bulldog (not seen) in a village in Kherwar district in Logar province, eastern Afghanistan, May 20, 2012. REUTERS/Danish Siddiqui

Two Afghan military officers went missing over the weekend after attending a training exercise in Massachusetts. According to reports, the duo was transported to the airport Saturday for a flight home.

Authorities told local media that the plane left without them as they did not show up at Logan Airport.

"It's embarrassing," Northeastern University associate professor Max Abrahms said, according to Boston 25 News. "I want to know the identity of these people, their backgrounds, and what they were trying to do."

The two officers attended a United States Department of Defense training exercise that took place at Camp Edwards on Cape Cod last week. More than 200 service members from five countries attended the exercise.

The whereabouts of the two officers still remain unknown.

In 2014, three Afghan officers attending the same type of training program left from a group outing at the Cape Cod Mall and were captured days later at the United States-Canada border in Niagara Falls.

"The fact that the federal agencies did not give the amount of information that they could to relive that kind of anxiety," Rep. Bill Keating said at the time.

This is a developing story.