PHOENIX - The 22-year-old girlfriend of a man in jail for a double murder has also been arrested, according to authorities.
Phoenix police say Elise Andrea Garcia was taken into custody on Monday and is being charged with first-degree murder and unlawful disposal of human remains.
Garcia is the girlfriend of Alan Matthew Champagne who was arrested on March 6 after landscapers found two bodies buried in the backyard of a Phoenix home.
Champagne, 42, was already in jail on an unrelated aggravated assault case.
The case began in October 2011 when Phoenix homicide detectives learned of a possible double murder at a Phoenix apartment earlier in the year.
They went to the apartment where a man and woman were reportedly murdered during an argument and found evidence that identified Champagne as a probable suspect.
In early March 2012, while following up on this case along with an aggravated assault case Champagne was a suspect in, they found him at his mother's home.
It turned into a barricade situation with Champagne firing a number of shots at officers before finally being taken into custody.
Phoenix detectives worked with the Maricopa County Sheriff's Office Jail Intelligence Unit and gathered more information pointing to Champagne as a suspect in the double murders.
On March 5, workers discovered a wooden box while doing landscaping at a home that had belonged to Champagne's mother. Inside were found the remains of what appeared to be an adult male and adult female, according to police.
On March 6, Champagne was taken to police headquarters to be interviewed about the murders but would not talk to detectives about the homicide.
Police say probable cause was developed to charge him with the murders and he was rebooked into jail.
Police say detectives developed information to believe that Garcia participated in the murders and she was arrested on March 25.