Beauty Queen Guadalupe Quintero and Boyfriend Abuse 5-Year-Old Oleander Labier to Death, say Police

GRESHAM, Ore. (CBS/AP) Oregon police are calling it the worst case of child abuse they've seen in 20 years.

They say 5-year-old Oleander Labier suffered for years before finally dying in an Oregon emergency room, allegedly at the hands of her father, Christopher Rosillo, and his live-in girlfriend, former pageant queen Guadalupe Quintero.

Gresham Police Sgt. Rick Wilson said Oleander's abuse was "the worst case of child abuse" that members of the Multi-Agency Child Abuse Team and East Metro Major Crimes had seen in 20 years. Sgt. Wilson said the official cause of death won't be released until the coroner's report is complete.

On April 13, medics found Oleander unconscious and not breathing when they arrived at a house in Gresham, Ore., about 15 miles east of Portland. The child was pronounced dead on arrival at a Portland hospital.

If the allegations are true, it will be a far fall from grace for Quintero, who was crowned Miss Clackamas County four years ago and was a contender to represent Oregon in the Miss America Pageant, according to local Portland station KATU.

Before her death, neighbors told the station that the young girl was so fragile that she was often seen walking around with a feeding tube.

The couple's two other children, a 3-year-old and an 11-month-old, were taken into protective custody.

Rosillo and Quintero, both 23, have been charged with murder. They are being held without bail in a Multnomah County jail.