The Glendale Police Department released the full report on the investigation of Jhessye Shockley's murder.
The report goes into explicit detail about the exhaustive search for Jhessye, her mom Jerice Hunter's background of abuse and the tips and leads that investigators followed.
Hunter is facing charges of first-degree murder and child abuse in Jhessye's disappearance.
Up to this point, the public never really knew why police believed with certainty that Jhessye was killed and her remains at the Butterfield Landfill.
The crucial tip that lead them in that direction is reflected on page 925 of the report. There it is revealed that on Nov. 23, about six weeks after Jhessye was reported missing, a woman contacted investigators.
That woman said that seven to 15 days before Hunter reported her daughter missing, she gave Hunter a ride to Tempe. At the time, Hunter put a large, heavy suitcase in the woman's trunk. When they got to Tempe, Hunter put it in a Dumpster. Hunter even apologized to the woman for the smell of the suitcase. Police tested the trunk of that car and it tested positive for blood.
Jhessye's body has never been found. Glendale police said they believe she was killed last fall and her body was thrown in a trash can in Tempe.
Investigators have been working on the case since Oct. 11, 2011, when Hunter reported her daughter missing.
SPECIAL SECTION: Missing Jhessye Shockley SLIDESHOWS: Search for Jhessye INTERVIEW: CBS News' Donna Rossi's exclusive interview with Jhessye's mother Jerice Hunter FLIER: Jhessye was reported missingMore>>