Christopher Dorner Search: LA Police Chief Reopens Former Officer's Case

Clayton Sandell details the latest information in the manhunt for ex-LAPD cop.
2:36 | 02/10/13

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Transcript for Christopher Dorner Search: LA Police Chief Reopens Former Officer's Case
We'll head out west for a surprise development in the case of former lapd officer christopher dorner. On the run after allegedly killing three people and putting much of the southwest on alert. The l.A. Police chief reordered an opening of the case that got him dismissed from the force. The latest from big bear lake, california, where the search is centered. Good morning to you, clayton. Reporter: Good morning to you, bi there are still about 50 law enforcement officers searching the mountains in this area on the lookout for christopher dorner and as you mentioned they're trying a new tactic now to try to bring this week-long reign of terror to an end. We are coming together today to catch mr. Dorner. Reporter: Overnight they announced the 2007 case that got christopher dorner fired from the department for allegedly lying is now being re-opened by the police chief. It was dorner's anger over that firing that apparently prompted his alleged rampage this week. But the l.A. Police chief insists that has nothing to do with his decision to reinvestigate the case. I'm not doing this to appease him. I'm doing this so that the community has faith in what the police department does and I'm going to -- I'm going to make a rigorous inspection to either validate or refute his claims. Reporter: Abc news also learned thursday a man claiming to be dorner called randall quan who represented him in his legal battle against the department. He is the father of monica quan an assistant basketball coach who police say dorner shot to death along with her fiance keith lawrence. Four days later a man who identified him called the grieving father to taunt him. According to a federal warrant, the man calling says "he should have done a better job protecting his daughter." Reporter: At a game saturday players and fans paused for a moment of silence. Dorner hasn't been seen since thursday when police say he shot three officers killing one. Officer shot multiple times. We will look under every rock, we will look around every corner. Reporter: In the mountains where dorner's burnout truck was found with a broken axle and two ar-15 rifles still inside heat-detecting helicopters are now searching a trail gone cold. And police tell us they are still guarding about 50 officers and their families that dorner threatened in that online Police also tell us they are beefing up the number of officers guarding tonight's grammy awards in los angeles. Dan, bianna? Still a stressful time in that part of the country. Clayton, thank you.

This transcript has been automatically generated and may not be 100% accurate.

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