KILLEEN, Texas -- One military suspect is dead after taking his own life on Tuesday and a civilian suspect has been arrested in Killeen by the Texas Rangers in connection with the disappearance of Pfc. Vanessa Guillen.

Several agencies were searching for the soldier from Ft. Hood who fled the post late Tuesday. They attempted to make contact with the suspect, but he reportedly displayed a weapon and took his own life.

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The civilian suspect is the estranged wife of a former Ft. Hood Soldier and is currently in custody in the Bell County Jail awaiting charges by civilian authorities.

Additionally, Texas Rangers, with assistance from other agencies, are still processing the scene at the Leon River in Bell County where partial human remains were discovered Tuesday. A positive identification of the remains is pending.

“We have made significant progress in this tragic situation and are doing everything possible to get to the truth and bring answers to the family of Pfc. Vanessa Guillen,” said Chris Grey, the spokesman for Army CID.

The 20-year-old Guillen was last seen on the morning of April 22 in the parking lot of her Regimental Engineer Squadron Headquarters, 3rd Cavalry Regiment on Fort Hood, Texas, and had not been heard from since that date.

According to CID officials, this is still an open and ongoing criminal investigation.

“There is still a lot of investigative work to be done and we ask for the public and media’s patience,” Grey said. “There are obviously pieces of information and evidence that cannot be shared with the public during an active criminal investigation. Doing so can seriously jeopardize the charging and successful prosecution of individuals. When important investigative information is prematurely released, criminals can and will destroy evidence, conspire to change their stories, build false alibis, etc.”

No further information will be released at this time.

Persons with information can contact Army CID Special Agents at (254) 287-2722 or the Military Police Desk at (254) 288-1170. They can also anonymously submit information here.