The Union City Police Department (UCPD) announces significant developments in a 16-year-old cold case involving the tragic death of a newborn girl found deceased in a dumpster at the Parkside Apartments on May 18, 2009.
The newborn lovingly named Matea Esperanza by UCPD officers—a name meaning "Gift from God" in Hebrew and "Hope" in Spanish—was discovered by a man searching for recyclables. The discovery led to an extensive and challenging investigation that remained open and active for more than a decade.
As part of the long-term investigation, UCPD detectives were able to develop suspect leads through advanced DNA analysis of evidence collected in 2009. This work ultimately led investigators to identify a potential suspect. Further DNA comparison confirmed the identity of 46-year-old Angela Onduto of Denver, Colorado, who had previously been identified as a person of interest during the initial stages of the 2009 investigation.
In May 2025, around what would have been Matea's 16th birthday, UCPD detectives traveled to Denver to coordinate with local law enforcement. Onduto was arrested at that time, however, charges were initially withheld pending further forensic analysis and a detailed review of the medical examiner's findings.
Following weeks of continued investigative work, the Alameda County District Attorney's Office has now filed a charge of murder under California Penal Code 187 against Onduto. She was taken into custody by the Denver Police Department late on July 2, 2025. Union City detectives are now working to extradite her to Alameda County, where court proceedings will move forward.
The UCPD expresses deep gratitude that justice is progressing in Matea's case after 16 years, reaffirming the department's commitment to solving cold cases and bringing closure to the community.
Matea's memory continues to resonate within Union City. In 2017, the Union City Police Officers Association purchased a permanent grave marker in her honor, and a memorial service is held annually by members of the department.
The investigation remains active. Detectives continue to follow up on additional leads and potential witnesses. The department urges the public and media to be respectful and sensitive to the ongoing nature of this case and the legal process.
Anyone with additional information is urged to contact: Cold Case Detective Ayala at (510) 675-5259; Anonymous tip line: (510) 675-5207.
Republished courtesy of UCPD