The Sheriff Department of Los Angeles County confirmed the identity of the victim as a 9-year-old Trinity Love Jones from Los Angeles County.
"Investigators arrested two interested individuals in this case and continue their investigations," the sheriff's department wrote in a press release.
The identity of the two persons was not published.
The announcement came hours after a family came forward to identify the girl as Trinity. The sheriff's department said late on Sunday night that the county examiner had confirmed this identity.
The family erected a makeshift memorial for Trinity nearby, where their body was found in a Rollaway travel bag on March 5.
Antonio Jones, who said he was the father of Trinity, described the girl as "fun, loving, big heart, bubbly".
"The little girl could have been what she wanted to be in life," he said.
The monument on the site is decorated with balloons and teddy bears and explains "Rest the Heaven Our Trinity Love Jones".
Her body was found on a footpath south of Hacienda Boulevard and Glenmark Drive.
Officials said the body appeared to have been pushed down a causeway on a bridle path within 24 hours of finding local workers working the way.
Trinity was pronounced dead at the scene, and the coroner's office later ruled her death as a murder. The exact cause of death is withheld.
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