Prison death of LA County man to be investigated as homicide
California Department of Corrections and Rehabilitation officials are investigating the fatal stabbing at Calipatria State Prison of a 46-year-old incarcerated gang member from Castaic who was sentenced to death for his role in the kidnap-murder of a Buena Park businessman. At approximately 1:23 p.m. Thursday, prison staff observed Alberto Martinez being struck by another incarcerated…