This article was updated at 3:37 p.m. Feb. 10, 2013 to include some of the donors to the million-dollar reward being offered for Dorner's capture and conviction.
Donors to the reward fund included police officers associations in Los Angeles, Riverside, San Diego, Irvine, Long Beach and the Port of Los Angeles.
The Los Angeles Dodgers and the Staples Center's AEG contributed, as did the United Firefighters of Los Angeles, and the Association of Los Angeles County Sheriff's Deputies.
Also contributing were the FBI, First Watch, and the city and county of Riverside, as well as six anonymous donors.
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Calling the recent killings of an engaged couple and a Riverside police officer acts of "domestic terrorism," Los Angeles police Chief Charlie Beck appeared with L.A. Mayor Antonio Villaraigosa Sunday to announce a $1 million reward for the capture of a former LAPD officer.
Christopher Jordan Dorner, 33, is accused of killing engaged and Riverside police Officer Michael Crain, 34; he is also accused of threatening scores of law enforcement officers in the area.
"This is the largest local reward ever offered to our knowledge," Beck said during a televised news conference.
"This is an act and make no mistake about it, of domestic terrorism," Beck said, adding that the crimes committed, "cannot go unanswered."
Los Angeles County Supervisors Michael D. Antonovich -- whose district covers Claremont -- and Mark Ridley Sunday announced they will seek $100,000 from the Board of Supervisors on Tuesday.
At the conference, Beck said that "50 LAPD families" are currently being guarded.
The chief also said that the $1 million was easy to collect.
"It was amazingly, amazingly easy," Beck said, adding that donations large and small came from law enforcement unions around the state, the police credit union and other employee unions.
Private donors also contributed, the chief said.
"Many contacted me, or the mayor. They didn't have to be asked," Beck said.
Officials said that actually, more than $1 million was collected.
There were many questions at the conference but not too many details about the search or any tips coming in were released.
The mayor added that Dorner was probably watching the news conference.
"We are impeding our own investigation," the mayor said.
"If we gave you information that would somehow tip him to what we know, we would be putting the public at harm."
Officials urged Dorner -- if he was watching -- to turn himself in.
The announcement of the award comes on the heels of an announcement the the LAPD plans to reopen the case that led to Dorner's firing.
The suspect claims that his unfair treatment at the hands of top brass has led to his alleged rampage.
Beck said he wants to take a look at it because the events occurred before he was chief and he wants to ensure nothing was missed in the investigation.
--- City News Service contributed to this article.
