Multiple law enforcement agencies including the FBI responded to the initial threat, Lyons said.

Lyons said the only shot the soldier fired was the one that took her own life.

The post was back to normal operations Monday morning except for the Lee Avenue gate and the CASCOM headquarters, which remained closed as the Army Criminal Investigation Command pored over the scene.

The soldier, whose name the military won’t release until 24 hours after notifying her family, was taken to VCU Medical Center where she was later pronounced dead.

Lyons described her as a sergeant first class with 14 years of military service, including a 15-month deployment to Iraq in 2007. She had been assigned to Fort Lee for about three years, he said.

Military officials have not released a motive for the suicide and declined to say whether the soldier had been seeing anyone for mental health issues.

“Obviously she was upset and enraged. I can’t speculate or speak to what may have caused that,” Lyons said.

Suicide rates in the Army have spiked in the past decade, rising above the civilian rate in 2008 and continuing to grow annually until last year. The Army reported 325 suicides in 2012 and 301 in 2013.