Monserrat Rivera‑Romero was three years old when she was taken from Oxnard, California on January 22, 2005. She was described as a Hispanic/Latina child, about 3 feet 3 inches tall and 39 pounds, with brown hair and black eyes. That day she and her siblings Alejandra and Wesley were taken by their non‑custodial father, Alejandro Rivera Avina, in an incident classified by law enforcement as a parental abduction.

Authorities believe the father transported the children across the border to Mexico shortly after January 22 and did not return them to the custodial parent. A warrant for unlawful flight to avoid prosecution was issued by August 2005; as of the latest public case files Monserrat remains listed as missing and no confirmed public sightings or verified leads have been reported. Some archival records from For The Lost indicate the three children were located safe in April 2021, but public databases and the Ventura County case file still list Monserrat as missing.

Does anyone have information about Monserrat, her siblings, or their whereabouts in the years after January 2005?