Victoria Henneberry, 28, and Blake Leggette, 25, who had been facing charges of being in possession of a stolen vehicle were charged Thursday in the slaying of the 26-year-old Saint Mary's University student.
Her body was found Wednesday afternoon on the median of Route 2 of the Trans-Canada Highway, west of Salisbury, N.B. Forensic investigators from both Halifax police and RCMP in New Brunswick are working on the case.
Saunders was last seen in the Cowie Hill Road area of Halifax on the morning of Feb. 13. Five days later, her car was located in Harrow, Ont.
Yalcin Surkultay, who dated Saunders for 2½ years, told CBC News that when he last saw his girlfriend, she told him she was going to try to collect rent money off her roommates.
An autopsy will be performed on Saunders's remains, which have been transported to the coroner services office in Saint John.
Both Leggette and Henneberry are scheduled to appear in Halifax provincial court on Friday on the murder charges.