Soldier at Lewis-McChord detained in bomb threat

Updated 11:50 p.m. ET

(CBS/AP) TACOMA, Wash. - A 20-year Army officer in Washington state threatened to blow up the state Capitol and kill his superior officer, his estranged wife and his girlfriend, authorities said Tuesday, adding scrutiny to the troubled base of a soldier accused of killing 16 Afghan civilians in a shooting spree.

Lt. Col Robert Underwood allegedly told his daughter "he was going to do something crazy and it would be on the news, the world would know about it," according to court documents (PDF). Underwood was arrested Monday night and pleaded not guilty to felony harassment charges. Prosecutors allege he told his girlfriend he'd paid a hit man $150,000 to kill both his wife and superior officer. Underwood is allegedly in the middle of a nasty divorce and custody battle.

A federal official tells CBS News that federal charges against Underwood are not expected. Authorities believe the suspect "has some issues" and the threats he allegedly made were made in offhand remarks to various family members and associates. There is no evidence at the moment that the soldier had the wherewithal to carry out any kind of attack.

Underwood, 46, is assigned to the 191st infantry brigade, a training support brigade, Lewis-McChord spokesman Joe Piek said.

Lewis-McChord is the same base where the alleged Afghan rampage shooter came from, and has had a history of troubles with soldiers returning from war zones. Many have alleged base officials under-reported and don't deal well with PTSD cases.

According to , Underwood underwent a psychological evaluation recently but, "Although the defendant has been deployed multiple times, the military said he does not suffer from PTSD [Post Traumatic Stress Disorder]. However, when he was a young child he witnessed his mother kill his two siblings. She also shot the defendant multiple times and left him for dead."

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Court documents also allege Underwood possessed naked pictures of his teenage daughter, and that his internet search history indicated he sought out how to "get teenagers drunk and have sex with them."

Pierce County Sheriff's Department spokesman Det. Ed Troyer said that Underwood also made threats to blow up the capitol building in Olympia as well as target unnamed government officials.

Underwood has been detained on three counts of felony harassment, KIRO reports. He pleaded not guilty and was ordered held on $250,000 bail.