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San Diego Marine wife's murder: 3rd person pleads not guilty

The body of Brittany Killgore, seen in this undated photo, was found on Tuesday, April 17, 2012.

May 16, 2012 12:00:00 AM PDT
A third person has pleaded not guilty to the murder of a Camp Pendleton Marine's wife.

Dorothy Maraglino, 36, was arrested last week, nearly a month after the body of 22-year-old Brittany Killgore was discovered near Lake Skinner. Her bail has been set at $3 million.

The district attorney says Maraglino was the girlfriend of 45-year-old Marine Staff Sgt. Louis Perez, who is married to another woman. Perez has also been arrested, along with 25-year-old Jessica Lynn Lopez. All three suspects lived in a Fallbrook home where Killgore was allegedly killed.

Killgore's body was found nearly a month ago. She was last seen April 13, three days after she filed for divorce from Lance Cpl. Cory Killgore, who was serving in Afghanistan at the time.

Investigators found Killgore's blood and a weapon in Perez's car, according to prosecutors. Authorities have not disclosed a motive for the killing.

The Associated Press contributed to this report.