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Fired Los Angeles Police Department (LAPD) officer Christopher Dorner is seen in an undated photo displayed at a press conference by Los Angeles police Chief Charlie Beck (not in photo) regarding the manhunt for Dorner, at LADP headquarters in Los Angeles February 7, 2013. Los Angeles police launched a full-scale manhunt for Dorner, a dismissed officer believed to have killed three people including another cop. Christopher Jordan Dorner had posted a chilling online warning about "terminating" the life of a collegue he blamed for his dismissal, and threatening other police and their families. AFP PHOTOS / ROBYN BECK        (Photo credit should read ROBYN BECK/AFP/Getty Images)
Fired Los Angeles Police Department (LAPD) officer Christopher Dorner is seen in an undated photo displayed at a press conference by Los Angeles police Chief Charlie Beck (not in photo) regarding the manhunt for Dorner, at LADP headquarters in Los Angeles February 7, 2013. Los Angeles police launched a full-scale manhunt for Dorner, a dismissed officer believed to have killed three people including another cop. Christopher Jordan Dorner had posted a chilling online warning about "terminating" the life of a collegue he blamed for his dismissal, and threatening other police and their families. AFP PHOTOS / ROBYN BECK        (Photo credit should read ROBYN BECK/AFP/Getty Images)

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Hundreds of investigators are working hundreds of clues. Has the trail gone cold? CNN's Miguel Marquez reports.

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Hundreds of investigators are working hundreds of clues. Has the trail gone cold? CNN's Miguel Marquez reports.