Update: New Information About Chico Doctor and Wife Accused of Killing 2-Year-Old Adopted Son

CHICO, Calif. - A Chico Doctor and his wife were arrested Wednesday for killing their 2-year-old adopted son. Two-year-old Benjamin died from head trauma in April.

Dr. James Peter Yhip, 46, and his wife Edelyn Yhip, 43, both work at Enloe Medical Center in Chico.

Dr. Yhip has been a cardiologist and a part of the medical staff at Enloe since June 2006. Edelyn Yhip has worked as a nurse at Enloe since July 2011.

Butte County District Attorney Mike Ramsey told KRCR Newschannel 7, the investigation revealed that Benjamin suffered a series of injuries prior to his death. He and his twin brother were adopted by the Yhips, along with an adopted daughter.

Ramsey said Benjamin was hospitalized in November 2011, suffering from severe malnutrition. Then in January 2012, he suffered a broken leg after his father fell on him. The boy also had fractures to his upper arms, hands and feet.

Then on April 18, Edelyn Yhip called 911 from the family's home on Gardenbrook Drive in North Chico. She reported her son Benjamin was unresponsive. He was stabilized at Enloe Medical Center and taken to Sutter Memorial Hospital in Sacramento where he died the following day. The investigation revealed he died from blunt force trauma to the head.

After a three-month investigation, the Yhips were arrested for murder on Wednesday, exactly three months since the 911 call landed the boy in the hospital.

James Yhip was arrested on one count of murder and one count of felony child endangerment. He is held at the Butte County Jail on $1,050,000 bail.

Edelyn Yhip was arrested on one count of abuse of a child under 8-years-old causing death, murder, and felony child endangerment. She is held on bail of $2,050,000.

Benjamin was the adopted son of James and Edelyn Yhip. His twin brother and adopted sister have both been placed with Children Services since Benjamin's death.

Neighbors in the Yhips' affluent North Chico neighborhood are standing by the couple.

One neighbor who wished to remain anonymous said she was on the phone with Edelyn Yhip when the neighbor saw police outside the Yhip home.

"I said Edelyn I want to warn you that people are at your house waiting to ambush you by policemen and she said that she knew. There was kind of silence and she said, "we didn't do it.

The couple is scheduled to appear in Butte County Court on Friday.