The discovery was made around 5 p.m. on the 500 block of East Valley Boulevard. Authorities said two of the victim's friends came to check on her because they hadn't heard from her since the weekend.
Investigators have not released the victim's identity, only identifying her as an adult Asian woman.
Police say there is no sign of any forced entry, indicating the victim may have known her attackers.
The investigation is ongoing. Anyone with information about this incident was asked to contact the Los Angeles County Sheriff's Department's Homicide Bureau at (323) 890-5500.