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Modesto Mass Murder Suspect Pleads Not Guilty In Toddler Killing

MODESTO (CBS SF) -- A man accused of killing five people at a Modesto home on Saturday and a toddler last year was transferred overnight from Santa Clara County Jail to Stanislaus County, and pleaded not guilty in one of the killings.

Martin Martinez, 30, of Modesto, is a suspect in the deaths of his 6-month-old daughter; his ex-girlfriend 38-year-old Amanda Crews; his mother 57-year-old Anna Brown Romero; a 6-year-old girl, and a 5-year-old girl who is a distant relative, police Chief Galen Carroll said.

Crews was a doctor at Scenic Faculty Medical Group, which is contracted to provide physician services at Stanislaus County clinics, according to county officials.

"Our deepest condolences go out to the family, friends and patients of Dr. Crews. She was loved as a mentor to the residents she taught.  She was loved as a physician by her patients and she was loved and respected by her colleagues," the medical group and county said in a statement.

Martinez is facing a murder charge in the death of 2-year-old Christopher Ripley, Crews' son, in October 2014, according to police.  He pleaded not guilty to that charge in court Thursday.

Two days before Christopher died, Martinez was caring for the child, who was taken to two hospitals to be treated for head injuries, police said.

The boy's death required an investigation by a forensic specialist because of "the complexity of the case, especially with a child involved," police said.

Last Thursday, a neuropathologist determined the boy died from a homicide or blunt force trauma and not by accident, police said.

The three young girls and two women were found dead at a home in the 2600 block of Nob Hill Court on Saturday afternoon and police developed leads that identified Martinez as a person of interest in the case, police said.

The 6-month-old infant was the daughter of Martinez and Crews, according to police.

Modesto police obtained a warrant for Martinez's arrest and alerted law enforcement agencies across the state to look for him, police said.

San Jose police were informed by Modesto police that Martinez was driving a red Lincoln Navigator, which they found Saturday night in the 2400 block of Lucerne Way just north of Reid-Hillview Airport, San Jose police Officer Albert Morales said.

San Jose police investigators found out Martinez left the area with a family member in another vehicle, which was found at the Westfield Oakridge shopping mall parking lot around 12:45 a.m. Sunday, Morales said.

Officers saw Martinez exit a movie theater, where he had was watching a film with his father, according to police.

Martinez was booked into Santa Clara County Jail on Sunday and was transferred to Stanislaus County Jail late Wednesday night or early this morning.

Modesto police have not disclosed the possible motive or cause of death in the homicides.

TM and © Copyright 2015 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2015 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.

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