The identities of 10-year-old twins killed in a suspected murder-suicide by their father in California have been released. The Los Angeles County Medical Examiner listed the children’s names as Greysen Chavez and Joseph Chavez. No cause of death was listed for the boys. The horror unfolded Sunday at a residence in the 8016 block of Owensmouth Avenue in the San Fernando Valley neighborhood of Canoga Park. Investigators believe the case was a murder-suicide, though authorities have not publicly