Two "persons of interest" have been detained in connection with the death of a 9-year-old girl, whose body was found inside a duffel bag on a hiking trail in Hacienda Heights in California. Authorities investigating the case released the identity of the girl Sunday.

“Investigators have detained two persons of interest in this case and they are actively continuing their investigation,” authorities said, without identifying them. “Today, the Los Angeles County Medical Examiner- Coroner’s Office confirmed the identity of the victim as Trinity Love Jones, FB/9 years old, a resident of Los Angeles County. Although the Coroner’s Office determined the death to be a homicide, the cause of death is being withheld.”

"These are the hardest cases to handle,” the Los Angeles County Sheriff’s Department officials said in an earlier news conference Sunday, pledging to “find the reason for this child’s death…our investigators are working diligently on it…It’s just a tragic situation.”

The sheriff’s department released pictures of the clothing the dead girl was wearing when she was found in the bag. In the photos, the girl was wearing a pink shirt that bore the words “future princess hero.”

“The young girl was found to be wearing a pink, long sleeve shirt with gray panda print pants (actual clothing depicted). She stood approx. 4 ft, 5 inch. tall and weighed about 55 lbs. No obvious signs of trauma were found on the victim’s body,” the sheriff’s department said in a release.

While the cause and time of death were not revealed, police believe the body was placed on the trail on Sunday afternoon. The bag was located “at the bottom of an embankment,” said authorities.

“The victim was dumped at the location some time during the late evening hours. The victim was discovered by county workers who were there clearing some brush,” authorities said Sunday. “The victim was found partially inside of a black rollaway type duffel bag.”

Antonio Jones, the father of Trinity Love Jones, told KTLA-TV that the girl was “just the best."

A GoFundMe page set up to help the child's family described the girl as "Bright, Full of Life, and Had a Smile that would Brighten Up the Moment of those around Her. It’s what stood out the Most, like with most Children."

“Her Curiosities often raised awareness that Left one Enlightened if they were to ever encounter one of her many keen Questions. She enjoyed Fashion, and often played Dress Up, which was one of Her favorite pastime activities. Dainty, Prissy, and a Social Butterfly, She will be Greatly Missed and Celebrated by Close Family and Friends. Funds are being raised to help with Homegoing costs and arrangements. Any amount is Appreciated, and Thanks Ahead of Time for your Love and Support,” the page read.

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