Authorities identify dead woman found slain at her home in Arcadia as 76-year-old Chyong Jen Tsai. Detectives are still looking for whoever killed the Arcadia grandmother and stole a white Lexus RX300 from the home in the 300 block of East Forest Avenue. Three weeks before the killing, her home had been burglarized. Detectives are not ruling out this connection to the homicide.