(KTEN) — The search continues for a Louisiana woman whose last known location was in the Texoma area two weeks ago.

The black 2006 GMC Envoy sport utility vehicle that Caitlyn Case was driving was found along the banks of the Kiamichi River south of Fort Towson, Oklahoma, one week ago.

The Oklahoma State Bureau of Investigation said special agents have now determined that Case, 33, was near Bogata, Texas, on August 5 around 5 p.m., on a planned trip to Colorado. Her vehicle headed north on U.S. 271 toward Paris.

Case's cellphones connected to towers near Pattonville and Paris shortly after 7 p.m. on that date.

Caitlyn Case last contacted family members on August 5, 2022.

According to investigators, Case's SUV looped around Paris on State Highway 286 to FM 79 at around 9 p.m., when it traveled northwest along "an unknown path headed to Oklahoma."

The vehicle crossed the Red River on U.S. 271, then turned east on State Highway 109 south of Grant, Oklahoma.

"At this point in the investigation, there is concern that someone other than Case was in control of the vehicle," the OSBI said in a statement on Friday. "It is believed that an attempt was made to deposit the vehicle in the Kiamichi River to hide its location during the late-night hours of August 5, 2022. It is not believed at this time that Case physically entered Oklahoma."

Anyone who may have surveillance video along the stated route between 5 and 10 p.m. on August 5 is asked to contact the OSBI tipline at 800-522-8017 or [email protected]