ANAHEIM, Calif. — Police are no closer to determining the cause of death of a transgender woman whose body was found June 12 behind a Dairy Queen restaurant in Anaheim, Calif.

An autopsy did not reveal any obvious fatal injuries that would have led to the death of Zoraida Reyes, a 28-year-old transgender immigrant rights activist, and toxicology and other testing could take several months to complete.

Police said there was no indication from the autopsy that Reyes died from trauma, but that evidence suggests Reyes did not die where she was found.

Reyes death has been ruled suspicious but has not been classified as a homicide, reports the Orange County Register.

Reyes was born in Michoacan, Mexico, but grew up in Santa Ana and attended Santa Ana College and UC Santa Barbara, fellow activists said.

She was active in local and national groups advocating for the rights of transgender people and undocumented immigrants.

Friends say they are concerned that Reyes may have been the victim of violence because she was transgender, and are puzzled by the hesitation of police to release information.