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Murder charge for mum as baby thrown from 4th floor

A seven-month-old baby boy who was tossed from the fourth floor of a hospital car park has died after his mother made a first court appearance on charges of attempted murder and felony child abuse.

The child died last night at the University of California, Irvine, Medical Centre, and charges against the mother, Sonia Hermosillo (31), were upgraded to murder, said a spokeswoman for the Orange County district attorney's office.

The woman's husband, Noe Medina, told the Orange County Register that his wife had been hospitalised for postpartum depression in June after she said she didn't want their son, Noe Jr, who was diagnosed with congenital muscular torticollis -- a twisting of the neck to one side.

"She didn't look at our son as normal," Medina said. "She didn't accept him. She didn't accept that he was like this." Both parents are immigrants from Mexico City. The infant also wore a helmet to help correct his plagiocephaly, the Register reported.

Prosecutors allege that Hermosillo removed the helmet before tossing him from the parking structure at Children's Hospital of Orange County late on Monday. She then went back inside the hospital to validate her parking, senior deputy district attorney Scott Simmons said.

Hermosillo's arraignment was postponed until September 16.