Medical examiners have positively identified the body of the renegade former Los Angeles police officer Christopher Dorner , the man authorities say killed four people and wounded three others in a vendetta against his old comrades . That announcement from the San Bernardino County Sheriff 's Department came two days after a shootout , standoff and fire at a cabin in the mountains east of Los Angeles . Dorner 's remains were identified through dental records during an autopsy , the department said . The charred remains of a man believed to be Dorner were found in the burned cabin late Tuesday . The cause of death was not released with the identification . Dorner was fired from the Los Angeles Police Department in 2009 for falsely accusing his training officer of kicking a subdued suspect . After unsuccessfully challenging his dismissal in court , police say , he launched a campaign of guerrilla warfare against the LAPD , targeting numerous officers involved in his case and their families . Former girlfriend : Dorner was stressed out . Dorner was cornered and died Tuesday afternoon in the San Bernardino Mountains , about 100 miles east of the city he had once sworn to protect and serve . The 33-year-old former Navy officer holed up in the cabin after a shootout with law enforcement that left a sheriff 's deputy dead and another wounded , San Bernardino Sheriff John McMahon said . The cabin caught fire when police shot tear gas canisters into it , McMahon told reporters Wednesday . Although the canisters included pyrotechnic tear gas , which generates heat , `` We did not intentionally burn down that cabin to get Mr. Dorner out , '' he said . The city of Los Angeles and other communities in southern California had issued a $ 1 million reward for information leading to Dorner 's capture and conviction . What to do with that reward was under discussion Thursday , Mayor Antonio Villaraigosa and LAPD Chief Charlie Beck said . `` More than 20 jurisdictions and entities are involved in this reward , so all of them will be coming together to collectively determine whether any individual or individuals qualify for it , ' '' they said in a joint statement . `` Our personal hope is that the reward will be distributed , but we must follow the rules and respect the procedures of each entity . '' Ex-LAPD cop gains sympathizers on social media . Dorner 's mother , Nancy Dorner , expressed condolences for the victims in a statement given to Robin Sax at Fox 11 Los Angeles . `` It is with great sadness and heavy hearts that we express our deepest sympathies and condolences to anyone that suffered losses or injuries resulting from Christopher 's actions . We do not condone Christopher 's actions . The family has no further comments and ask that our privacy be respected during this difficult time . '' Dorner was first named a suspect in two shooting deaths on February 3 : Monica Quan , the daughter of his police union representative , and her fiance , Keith Lawrence . Police say he then killed Michael Crain , a police officer in suburban Riverside , and wounded Crain 's partner in an ambush on their patrol car February 7 . The partner , Officer Andrew Tachias , was in stable condition at a local hospital , Riverside police said . They say Dorner also wounded an LAPD officer who chased him into nearby Corona . In addition , LAPD officers guarding one of Dorner 's targets in suburban Torrance opened fire on a pickup truck that resembled Dorner 's , wounding two women inside . Beck called the shooting `` tragic '' and `` horrific . '' In a manifesto announcing his planned rampage , Dorner said nothing had changed in the LAPD since its scandals of the 1990s , the Rodney King beating and the Rampart police corruption case . Those allegations have struck a chord with some who say that , despite the four killings , Dorner was seeking justice . Shadowed by that history , Beck announced Saturday that the department would re-examine its proceedings against Dorner . The review is `` not to appease a murderer , '' but `` to reassure the public that their police department is transparent and fair in all things we do , '' he said .
Officer Dorner 's mother offers help , asks for privacy . Ex - LAPD offier 's remains identified by dental records , authorities say . He was killed somewhere in the mountains east of Los Angeles . The cashiered ex - cop is blamed for killing four people and injuring three others .