Lamar County investigators and the district attorney’s office have asked the state crime lab to expedite toxicology testing on a 35-year-old woman who died after being left in a pickup truck for an extending period by her boyfriend.Lamar coroner Clay Tillery sent the body of Meagan Nichole McNair to the crime lab for autopsy.McNair’s boyfriend, 53-year-old Jerry Spires, drove her to Upson Regional Medical Center on Friday, Feb. 12 where she was pronounced dead. Upson officials contacted the Lamar sheriff’s office and an investigation was begun.Spires told investigators McNair was asleep in the truck when they returned to their home at 246 Old Alabama Road in Milner Feb. 11 so he put a blanket over her and left her in the truck. He said he checked on her early Feb. 12 before he left for work and again left her in the truck. When he returned home from work, McNair was still in the truck so he drove her to the hospital.A death from exposure is unlikely because temperatures only fell to 55 degrees overnight on Feb. 11.Investigators suspect an overdose, thus the request for expedited toxicology. ‘There could be more to it than that,’ Lt. Chad Payne of the LCSO said, noting investigators had executed a search warrant at the home Feb. 18.According to tax records, the property at 246 Old Alabama Road is owned by Jerry and Sheila Spires.Graveside services for McNair were held Feb. 21 at Southview Cemetery in Thomaston.