Published: Oct 19, 2010 3:21 PM EDT
Updated: Oct 19, 2010 12:21 PM EDT

ST. AUGUSTINE, Fla. (AP) - Human remains found in north Florida have been positively identified as a woman who went missing in July.

The St. Johns County Sheriff's Office announced Monday that the body found last week matched the dental records of 45-year-old Brittany Tavar. An autopsy found the cause of death to be blunt-force trauma.

Tavar was last seen July 6, leaving a party with 26-year-old Joseph Dean Roberts. Her dogs were found abandoned July 10 in South Carolina. Roberts was pulled over in Wyoming July 11 for speeding in Tavar's vehicle and later spotted Oregon, buying a tent.

Roberts was reportedly picked up for shoplifting in Seattle last Tuesday. He was transferred to Florida after officers found he was wanted on a car theft charge from St. Johns County. He was being held on $500,000 bail.