Brittany Killgore Murder Case: Dorothy Grace Marie Maraglino, third person accused in the slaying of Marine's wife, to be arraigned

(CBS/AP) SAN DIEGO - Dorothy Grace Marie Maraglino, the third person accused in the slaying of Camp Pendleton marine wife Brittany Killgore, is scheduled for arraignment Tuesday. 

Pictures: Marine's wife missing, cops suspect foul play

Prosecutors said Monday that Maraglino will be arraigned on a murder charge, reports CBS affiliate KFMB.

Maraglino, 36, was arrested at a hotel in downtown San Diego late Thursday and booked on suspicion of murder in the death of the 22-year-old Killgore, police say.

Brittany Killgore was last seen April 13, three days after she filed for divorce from her husband, Lance Cpl. Cory Killgore, who was serving in Afghanistan at the time. Her body was found in brush near Lake Skinner, about 70 miles north of San Diego, four days later.

Louis Ray Perez, 45, a Marine staff sergeant, and Jessica Lynn Lopez, 27, have already pleaded not guilty to the murder.

Investigators found Killgore's blood and a weapon in Perez's car, according to prosecutors. Perez told investigators he dropped off Killgore in downtown San Diego's bustling Gaslamp District, but investigators concluded that he lied about his whereabouts and stayed about 60 miles north in Fallbrook.

San Diego County Sheriff Bill Gore said late Thursday that Maraglino's arrest was the result of evidence obtained during the investigation but did not elaborate.

Property records show Maraglino is in foreclosure proceedings on a Fallbrook home listed as a residence by Perez and Lopez. Prosecutors have said the two lived together at one time but have not said when or where.

Bank of America filed a default notice on the home two weeks ago, saying Maraglino owed $12,862.

Complete coverage of Brittany Killgore on Crimesider