Since 2002, Crane has been in and out of jail and prison on drug charges.
In 2009, Crane was found mentally incompetent to stand trial but later restored.
The following year, court records show that Crane's mother told police her son was possibly Schizophrenic and bipolar and had to be medicated while behind bars.
She said he was addicted to meth.
"Whether she's qualified to diagnose his mental health, I don't know," said Maricopa County District Attorney Bill Montgomery, "obviously when you're talking about capital litigation, mental health evaluation at the outset."
Jail records show Crane was arrested by Phoenix police less than two months before the Shapiro crimes.
On Dec. 6, 2011, Crane was booked on eight felonies, including various drug and theft charges as well as possession of a weapon.
Crane was released six days later because the county attorney did not file charges and asked police to do further investigation.
At the time of the Shapiros' deaths, Phoenix police had not resubmitted the case to the county attorney.
The roles of each of the other defendants in the Shapiro case remains unclear. Three of the other suspects, Shawn Nicloy, Danielle Rossman and Kelly Steward, face charges related to stolen property belonging to the Shapiros.
Brittany Bienhauer has been linked romantically to Crane. Her one charge of theft stems from another crime. Police reportedly found her with property belonging to Bruce Gaudet.
Gaudet was found shot to death in his condo near Sixteenth Street and Maryland, which was set on fire four days before the Shapiro murders.
Investigators still have a strong interest in Maricela Sanchez, who is being held in Yuma.
Sanchez was arrested the day police discovered Gaudet dead.
Sanchez was reportedly driving Gaudet's car near Yuma. Police said she refused to stop for them and drove up to 110 mph to try to get away.
Prosecutors asked that she be held on $1 million bond until they can determine what role they believe she played in either of the Valley murders.
Stay with cbs5az.com and CBS 5 for more on this developing story.
Thursday, March 6 2014 9:29 AM EST2014-03-06 14:29:24 GMT
A South Carolina woman who drove her mini-van into the ocean at Daytona Beach with her three kids inside is from Cross in Berkeley County, according to authorities in Florida. Police say they interviewedMore >
A South Carolina woman who drove her mini-van into the ocean at Daytona Beach with her three kids inside is from Cross in Berkeley County, according to authorities in Florida. Police say they interviewed her two hours before the Tuesday afternoon incident but the woman was released because she showed no signs of being suicidal.More >
Friday, March 7 2014 5:10 PM EST2014-03-07 22:10:01 GMT
Several Windsor police officers, along with State Police and members of the Major Crimes division continue to investigate at a home on Bina Avenue. Officers could be seen going in an out of the 2-familyMore >
A man charged with murdering his sons' uncle in Windsor faced a judge on Friday.More >
Thursday, March 6 2014 11:04 AM EST2014-03-06 16:04:16 GMT
Batkid, the cancer patient who thrilled San Francisco with his efforts to save the city, was scheduled to appear at the Oscars but was scratched at the last minute, his mother said. Natalie Scott toldMore >
The 5-year-old Batkid who saved San Francisco was scheduled to appear on the Oscars, but his segment was cut before the show. More >
Thursday, March 6 2014 10:18 AM EST2014-03-06 15:18:45 GMT
Lawmakers were discussing a bill that would require drivers to take a test before renewing their license.Bill no. 335 would go into effect on Jan. 1, 2016.It states that "a licensee seeking renewal ofMore >
Lawmakers discussed a bill that would require drivers to take a test before renewing their license.More >
Thursday, March 6 2014 8:23 AM EST2014-03-06 13:23:14 GMT
They were stashed in a plastic tote and left along the highway to perish. Ten tiny puppies, all alive and well tonight, after being rescued and turned over to the KC Pet Project Animal Shelter. "He thoughtMore >
They were stashed in a plastic tote and left along the highway to perish. Ten tiny puppies are all alive and well after being rescued and turned over to the KC Pet Project animal shelter.More >
Thursday, March 6 2014 11:52 AM EST2014-03-06 16:52:13 GMT
The Metro Nashville Emergency Communications Center says employees received 162 false 911 calls from a child playing with an old cell phone in less than 24 hours. Officials say the calls started aroundMore >
The Emergency Communications Center in Nashville says employees received 162 false 911 calls from a child playing with an old cell phone in less than 24 hours.More >