The man wanted by the FBI for allegedly killing his wife, who was a soldier from Fort Bragg, North Carolina, has been found dead with an apparent gunshot wound in an apartment in Arizona, the Associated Press reported.

Jason Earl Armstrong had been barricaded in an apartment for hours before he was found dead late Wednesday, according to Phoenix police. Police identified Armstrong and said he was sought in a homicide at Fort Bragg, according to the AP.

An FBI wanted poster gave Armstrong's name as Jason Earl Armstrong Jr. and said he was 27. The poster said he allegedly killed his wife, Iris Armstrong, on July 1 inside their home on Fort Bragg. The FBI also said Jason Armstrong was seen on surveillance video using his wife's debit card shortly after the murder occurred.

Phoenix police say officers went to the apartment to assist the FBI after the suspect was spotted and he ran into the apartment. Police negotiated with the suspect but he was found dead alone after hours of negotiations.

The official cause of death will be determined by a medical examiner, according to the AP.

Iris Armstrong, 24, was a specialist in the 82nd Airborne Division. She was found dead about 10:30 a.m. July 6 in her home in the Nijmegen Community government housing area at Fort Bragg.

Army officials later confirmed that her death was being investigated as a homicide; the FBI was leading the investigation with help from Army Criminal Investigation Command.

Iris Armstrong, of Columbia, South Carolina, was a human resources specialist assigned to the 189th Combat Sustainment Support Battalion, 82nd Airborne Division Sustainment Brigade. She joined the Army in October 2012. After training at Fort Jackson, South Carolina, she was assigned in April 2013 to the 82nd Airborne Division.