An emotional interview this morning on Fox and Friends as Steve Doocy spoke with the parents of Lt. Darryn Andrews, who was killed in Afghanistan in an RPG attack in Sept. 2009. Now, Sondra and Andy Andrews are alleging a cover-up by the government of how their son died.

Ex-Platoon Members on 'Kelly File': 'Without a Doubt' Bergdahl Deserted

President Obama Defends Bergdahl Swap: 'We Saw an Opportunity'

Andy Andrews says he has learned through Facebook in recent days that his son, a U.S. Army officer, died while looking for Sgt. Bowe Bergdahl, who was freed this weekend in a controversial prisoner exchange with the Taliban. Andrews said his son had told them about Bergdahl deserting the unit in the months before his death.

Andrews said the government never mentioned the search for Bergdahl after their son's death, only telling them at the time that Lt. Andrews died while hunting a Taliban commander. He said he's been told that soldiers had to sign non-disclosure agreements, promising they would not discuss the search for Bergdahl.

"They certainly weren't telling the truth. I'm sure part of the mission had an actual search [for a Taliban commander] involved. But evidently the focus was looking for Bergdahl," said Sondra.

Mrs. Andrews believes her son died as a direct result of Bergdahl's desertion, calling for Bergdahl to be tried in a military court.

"He left his men during a war. That is even more critical than just leaving your base. ... He created a vulnerability because they had to look for him. Of course, the Taliban knew that the Americans would look for their men," she said, calling Lt. Andrews a "great son" and "a strong Christian" who was always looking to help others.

There are at least five other U.S. service members who are said to have been killed in the search for Bergdahl. The Pentagon said Monday it was reviewing claims about U.S. soldiers' deaths in the search for Bergdahl.

Watch the full interview above, and stay tuned to Fox News throughout the day for the latest on the Bergdahl swap.

See the latest on the Bergdahl swap from Fox News:

McCain: Released Gitmo Detainees ‘Hell-Bent’ on Destroying Americans

Dick Cheney: ‘Distinct Possibility They’ll Go Back in the Battle’

Judge Nap: Admin Providing Material Support to Terrorists

Talking Points: O'Reilly Reacts to Bergdahl Exchange