Police today continued to investigate the death of an 87-year-old woman -- a retired Los Angeles county sheriff's homicide detective -- whose body was discovered inside a freezer in the garage of her Riverside home.Riverside police said the body was discovered when officers went to the residence in the 6000 block of New Ridge Drive at about 9:35 a.m. last Sunday to conduct a welfare check on the woman, who lived there with a daughter. Authorities identified the woman as Miriam E. Travis. The Los Angeles County Sheriff's Department confirmed that Travis was a 27-year employee of the agency, retiring in 1990 as a detective sergeant. She worked in the department's Homicide Bureau for 11 years.A former colleague told the Los Angeles Times that Travis was the first woman to work murders