Champagne and Elise Garcia, then 21, barricaded themselves in the home with his 5-year-old son at 3823 N. 14th Place and Champagne and shot at a SWAT team as they forced their way in. The boy was released before the shooting.
According to court records, Champagne pleaded no contest to a second-degree murder charge in April 1992. He was released from prison in June 2005.
After the standoff a year ago, Champagne faced charges of first-degree attempted murder, kidnapping, aggravated assault and misconduct involving a weapon.
County records show the house was previously owned by Clarence Champagne, but it went into foreclosure and was sold at public auction in May 2011
Police were notified about the discovery at 1:45 p.m. Tuesday, according to police spokesman Sgt. Tommy Thompson.
Detectives from the Violent Crimes Bureau of the Phoenix Police Department are also assisting in the removal of the remains in the area near 16th Street and Indian School Road.
News helicopter pictures showed several police personnel digging in a shallow grave.
Police were at the home overnight collecting evidence.
Stay with cbs5az.com and CBS 5 News as this story develops.
[Text BREAKING to 23765 to get news alerts on your mobile phone]
Copyright 2013 CBS 5 (KPHO Broadcasting Corporation). All rights reserved.
UPDATEPhoenix ex-con re-booked after human remains foundMore>>
Sunday, May 19 2013 2:25 PM EDT2013-05-19 18:25:51 GMT
Nevada Highway Patrol is investigating a deadly crash on the I-15 near the Speedway. Three people are confirmed dead. The accident occurred around 4:30 a.m. Sunday when calls of gold Acura traveling northboundMore >
Nevada Highway Patrol is investigating a deadly crash on the I-15 near the Speedway. Three people are confirmed dead.More >
Friday, May 17 2013 7:16 PM EDT2013-05-17 23:16:53 GMT
One person has died in a crash near Harrisonville, MO, Thursday evening. The crash happened on Missouri Highway 7 and Walker Road. It involved a car and a tractor-trailer. Harrisonville is in Cass County.More >
Savannah Nash celebrated her 16th birthday last week. She died Thursday when her car slammed into a semi while she was texting during her first time driving by herself.More >
Saturday, May 18 2013 6:29 PM EDT2013-05-18 22:29:17 GMT
Family friends and classmates were distraught and angry at a candlelight vigil on Friday night for a 15-year-old who was killed over his iPad. Marcos Arenas died Thursday night when two male suspectsMore >
Family, friends and classmates were distraught and angry at a candlelight vigil on Friday night for a 15-year-old who was killed over his iPad.More >
Thursday, February 21 2013 3:40 PM EST2013-02-21 20:40:03 GMT
A woman arrested Tuesday was seen engaging in sexual acts with a pit bull while outside in a backyard and in view of neighbors, Las Vegas Metro police said. Metro Wednesday released the report describingMore >
A Las Vegas woman was arrested Tuesday after authorities caught her having sex with a pit bull in her back yard, according to Metro police.More >
Sunday, May 19 2013 1:29 AM EDT2013-05-19 05:29:19 GMT
The winning numbers for the Powerball $600 million jackpot are in and folks from all over Southern Nevada drove to Arizona and California to get their tickets and try to win big. On Saturday there wereMore >
The winning numbers for the Powerball $600 million jackpot are in and folks from all over Southern Nevada drove to Arizona and California to get their tickets and try to win big.More >
It's all about the odds, and one lone ticket in Florida has beaten them all by matching each of the numbers drawn for the highest Powerball jackpot in history at an estimated $590.5 million, lottery officials...More >
Some lucky person walked into a Publix supermarket in suburban Florida over the past few days and bought a ticket now worth an estimated $590.5 million - the highest Powerball jackpot in history.More >