LOS ANGELES—Two California police officers were shot and killed within 24 hours this week in separate incidents, authorities said Tuesday. An officer in the Northern California city of Stockton was fatally shot Tuesday morning, police said in a Twitter post. A male suspect was also shot and killed in the incident. Neither have been identified. Authorities did not immediately release further information. But they planned a news conference for later Tuesday. In San Luis Obispo, a central California city about 250 miles south of Stockton, Detective Luca Benedetti was shot and killed while serving a search warrant Monday evening. Benedetti, a 12-year law enforcement veteran and a detective in San Luis Obispo, was fatally injured in a shootout in an apartment in the Central Coast city, officials said during a news conference. Benedetti and five other officers had been at the apartment for an investigation into items stolen in a …