The killer dad is identified as PHILLIP MARSHALL.
http://www.mymotherlode.com/news/local/1965105/Update-On-MurderSuicide.html
Update On Murder-Suicide
February 03, 2013 02:48 pm
B.J. Hansen, MML News Director
Murphys, CA -- The Calaveras County Sheriff's Office has identified the three people killed in the suspected murder suicide in Murphys.
The body of 54-year-old Phillip Marshall, and his two juvenile children, were found inside their home in the Forest Meadows subdivision yesterday afternoon. All three died from gunshot wounds to the head. The children were 17-year-old Alex Marshall and 14-year-old Macaila Marshall, both students at Bret Harte High School. The family dog was also found dead. The Sheriff's Office believes that Phillip shot his children, and then turned the gun on himself. Phillip's estranged wife, and mother of the two children, was out of town at the time of the shootings.
The home is in the 1200 block of Sandalwood Drive. The Sheriff's Office plans to release more information as the investigation unfolds.