The investigation into Sergeant Bergdahl's disappearance and subsequent capture by the Taliban has begun with the first round of questioning by the officer in charge of the investigation.

Bergdahl was read his Miranda rights on Wednesday at Fort Sam Houston in Texas where the soldier is stationed, reports the New York Daily News. Maj. Gen. Kenneth Dahl, the Army's investigator, interviewed the 28-year-old Army sergeant.

"He waived his right to remain silent and answered every question that was put to him," Bergdahl's attorney, Eugene Fidell, told the Daily News while calling the interview an "intelligent effort to get to the facts."

According to the New York Times, Dahl cautioned Bergdahl by telling him he did not have to answer questions that may incriminate him but Bergdahl waived his Miranda rights regardless.

"He has responded to every question asked of him, and he has been afforded an opportunity to tell his story," Fidell said in a phone interview with the Times, saying the interview was "just letting the facts unfold in his own voice."

Fidell also called Maj. Gen. Dahl "a skilled interviewer, and he immediately put everyone in the room at ease," according to the paper. Dahl has been instructed to conduct an AR 15-6 investigation into Bergdahl's disappearance five years ago and to write a report on his findings. Based on this, Bergdahl's punishment will be decided.

Greg T. Rinckey, military law attorney in Albany, New York, told NBC News "there are lots of unanswered questions" but this first session probably covered a wider area of questioning from which Dahl can ask more specific questions later on.

NBC News also explains what could happen after the investigation and report are finished. If Bergdahl is found to have been doing nothing wrong, he will continue to serve. It could be that Dahl finds Bergdahl "committed an offense but that it's best handled by administrative actions intended to be corrective, not punitive, like counseling, reassignment, extra instruction or a reprimand."

Bergdahl could also be punished with a reduction of rank or pay and in a worst-case scenario he could be court-martialed