DETROIT, MI -- The frightening circumstances of 18-year-old Hayley Turner's disappearance last Thursday sparked a large-scale and expensive manhunt that involved dozens of law enforcement from multiple agencies and helicopter searches.

Now, officials in Monroe County and in Ecorse, where the teen was found safe Friday afternoon, believe it was all a hoax.

Ecorse Police Detective Lt. Gregory Blade, who questioned Turner after she surface in Ecorse Friday claiming she'd jumped from her abductor's vehicle, told WDIV, Channel 4 News the teen had problems answering basic questions, such as the make and model of her abductor's vehicle, and that the department has filed the case for criminal review with the Wayne County Prosecutor's Office.

"This afternoon, Sunday August 10th, 2014 at approximately 3:15PM, Detective Sergeant Jeff Pauli, along with a Special Agent from the FBI, conducted a follow-up interview with the alleged victim," The Monroe County Sheriff's Department posted to its Facebook page Sunday. "As a result of that interview, it was determined that the incident did not take place, as originally reported. The Monroe County Sheriff's Office will be closing out the investigation and forwarding the complaint to the Monroe County Prosecutor's Office, for review.

"The family requests that everyone respect their privacy during this most difficult time."

Monroe County sheriff's officials told MLive they are offering no further comment.

"I spoke to Sheriff (Dale) Malone this morning and he said nothing more is being said about the case," said Christy, a representative who answered the phone in the Sheriff's Office Monday. When asked to leave a message for a return call from Sheriff Dale Malone, she said, "you can leave a message but you won't get a call back."

Monroe County Prosecutor William Paul Nichols says his office hasn't received the case files or a request for a warrant review, but he expects to speak with the Sheriff's Office further Monday afternoon.

Turner's parents reported her missing shortly after 10 p.m. Thursday.

Police initially believed she was abducted after stopping to help a man she saw lying in a ditch in Bedford Township after leaving a Family Video store.

Turner, while on the phone with a friend, said the man had a gun shortly before the call abruptly ended.

Turner told police after being found at 19th Street and Saliotte Road in Ecorse -- about 45 miles from where her empty, idling vehicle was found -- she jumped out of her captor's car to escape.