ORANGE — A La Habra woman was behind bars Tuesday on suspicion of trying to kill her 7-month-old son by throwing him from the fourth floor of a parking structure at Children’s Hospital of Orange County.
Sonia Hermosillo, 31, was being held without bail, according to Orange County booking records.
Her son, whose name was not released, was fighting for his life at a hospital where he was listed in critical condition, Orange police Sgt. Dan Adams said.
Witnesses called 9-1-1 about 6:20 p.m. to report seeing the baby fall from the parking structure at the hospital, 455 S. Main St., the sergeant said.
“During the investigation, we learned from the La Habra Police Department that a man from La Habra had reported his wife, Sonia Hermosillo, and their 7-month-old son missing,” Adams said.
While reviewing surveillance footage from the parking structure, investigators noticed a small SUV that had left the structure just after the incident, he said.
The license plate indicated the SUV was registered to the same home where the La Habra woman and child had been reported missing, and it was being driven by a lone woman, Adams said.
As officials continued their investigation at Children’s Hospital of Orange County shortly after 10 p.m., an Orange police officer spotted the wanted SUV pass by the hospital, police said.
Officers pulled over the SUV and arrested Hermosillo without a struggle, Adams said. An empty child safety seat was still in the SUV.
Detectives questioned Hermosillo before ultimately arresting her on suspicion of attempted murder of her infant son, Adams said.
According to booking records, she was due for arraignment Wednesday in the Orange County Central Jail Court.

PHOTO of Sonia Hermosillo courtesy of the Orange Police Department