Brittany Killgore, 22, was missing for four days before her body was discovered abandoned in Riverside County.
A man who was uncooperative with investigators regarding the death of a 22-year-old Fallbrook woman has been arrested on suspicion of murder, according to the San Diego Sheriff's Department.
Louis Ray Perez, 45, was arrested on April 15 for allegedly stealing a AR-15 assault rifle and plead not guilty to charges on April 18.
Perez was also questioned in the disappearance of Brittany Killgore, a woman who went missing on April 13. Her body was found abandoned in Riverside County a few days later and deputies arrested Jessica Lopez, 25, in relation to the case.
Lopez and Perez had either lived together at one point or lived at the same residence at different times, according to legal records.
The district attorney's office has charged Lopez with murder, but has yet to comment about Perez.
Captain Duncan Fraser with the Sheriff's Homicide Detail said Perez has been a person-of-interest since April 14 -- the last day Killgore was seen. Perez was the last person to be seen with her. He has been in custody until Tuesday for unrelated charges.
Tuesday's announcement came after detectives determined they had enough evidence to make the recommendation for the charge. However, Fraser could not say what that evidence was.
Perez was booked in the Vista Detention Facility and faces charges of first degree murder, illegal posession of an assault weapon and stolen property charges.
He is not eligible for release. His arraignment is scheduled for Thursday.
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