(Reuters) - Authorities in California launched a statewide manhunt for a former Los Angeles police officer suspected in the Thursday morning shooting of three police officers after he threatened "warfare" on cops, the Los Angeles Times reported.

The same former officer, Christopher Dorner, 33, had been named as a suspect in the shooting deaths of the daughter of a former L.A. police captain and her fiance whose bodies were found on Sunday, police said in statement.

The suspect wrote a manifesto on his Facebook page, threatening to harm police officials and their families, the Los Angeles Times reported, citing law enforcement sources.

The California Highway Patrol issued a "blue alert" to law enforcement throughout the state for Dorner.

"The suspect is considered armed and extremely dangerous," the alert said. "The suspect was involved in multiple shootings with multiple agencies in the Riverside CHP area."

(Reporting by Daniel Trotta; Editing by Alden Bentley)