Authorities identified the pilot of a twin-engine plane that broke up in the sky and slammed into a Southern California house Sunday, killing the pilot and four people in the house.75 year old Antonio Pastini, of Gardnerville, was identified as the pilot, according to Lt. Cory Martino, Yorba Linda chief of police services. Pastini was a retired Chicago police officer, Martino said. Pastini was also a commercial pilot. The coroner is in the process of identifying the other four victims and notifying the next of kin, Martino said. The four dead include two males and two females.