Teams searched rural areas around Fallbrook Monday for 22-year-old Brittany Dawn Killgore, who was last seen Friday and whose cell phone was found Saturday in San Diego's Gaslamp District.
Lt. Larry Nesbit says Killgore was last with another Marine, 45-year-old Louis Ray Perez, who was arrested Sunday on suspicion of possessing a stolen rifle in an unrelated case.
The North County Times says records show Killgore filed for divorce last week from husband Cory Killgore, who is returning from Afghanistan because of the disappearance but is not suspected of being involved.
Nesbit says "there is a strong likelihood Britanny is the victim of foul play."
