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.
Monday, April 21 2014 10:43 AM EDT2014-04-21 14:43:50 GMT
Photo courtesy: The Maui News
A teenager claims to have stowed away on a Hawaiian Airlines flight from San Jose, California. Flight 45 landed in Kahului around 10:30 Sunday morning. Officials say about an hour later airport workersMore >
The FBI says a teenager from California stowed away on a Hawaiian Airlines flight from San Jose to Kahului, Maui on Sunday. More >
Monday, April 21 2014 7:02 AM EDT2014-04-21 11:02:15 GMT
Stamford police have arrested a woman in connection with a deadly hit and run that occurred Sunday evening. Police said they were called to the area of Woodland Avenue and Atlantic Street around 6:45More >
Stamford police have arrested a woman in connection with a deadly hit and run that occurred Sunday evening.More >
Sunday, April 20 2014 10:38 PM EDT2014-04-21 02:38:50 GMT
A motorcyclist was killed in a crash in Coventry on Sunday afternoon. Michael Hastillo, 32, of Coventry, was killed in a single motorcycle crash that happened in the area of 357 Flanders River Road.More >
A motorcyclist was killed in a crash in Coventry on Sunday afternoon.More >
Sunday, April 20 2014 8:36 AM EDT2014-04-20 12:36:44 GMT
A man got stuck in a porthole at bar in Essex early Sunday morning, authorities confirmed. Few details were provided, but an unidentified man got stuck at the Black Seal on Main Street around 1 a.m. TheMore >
A man got stuck in a porthole at bar in Essex early Sunday morning, authorities confirmed.More >
Sunday, April 20 2014 8:29 PM EDT2014-04-21 00:29:56 GMT
An elderly man from Fairfield got pinned between his garage wall and his pickup truck. Shortly after 6 p.m. on Sunday, firefighters worked to remove a man in his 90s out from in between the wall andMore >
An elderly man from Fairfield got pinned between his garage wall and his pickup truck.More >
Monday, April 21 2014 10:35 AM EDT2014-04-21 14:35:12 GMT
From the disappearances of aviator Amelia Earhart to labor union leader Jimmy Hoffa, there's just something about a good mystery that Americans find too tantalizing to resist. Perhaps that's why the saga of...More >
From the disappearances of aviator Amelia Earhart to labor union leader Jimmy Hoffa, there's just something about a good mystery that Americans find too tantalizing to resist. Perhaps that's why the saga of missing...More >
Monday, April 21 2014 10:11 AM EDT2014-04-21 14:11:11 GMT
Officials in Mansfield raised questions last week about gas reimbursement for the town's superintendent. Some town councilors said Fred Baruzzi received nearly $50,000 in gas mileage costs in additionMore >
Officials in Mansfield raised questions last week about gas reimbursement for the town's superintendent.More >
Monday, April 21 2014 8:07 AM EDT2014-04-21 12:07:28 GMT
A section of Route 8 southbound is fully closed in Seymour because of a crash. Police say the road is closed between exits 22 and 20 because of a tractor trailer that crashed down the embankment. ThereMore >
A lane of Route 8 southbound has reopened in Seymour. The highway had been fully closed following a crash.More >
Sunday, April 20 2014 6:29 AM EDT2014-04-20 10:29:32 GMT
A man has been arrested for murder after a female was found strangled in New Britain early Saturday morning. Luis Velez, 41, of New Britain, was identified as a possible suspect. At about 2:18 a.m.,More >
A man has been arrested after a female was found strangled in New Britain early Saturday morning.More >