There are still many unanswered questions about what happened to Carlee Russell, the 25-year-old who went missing in Alabama for two days after she called 911 to report seeing a child on the side of an interstate, and police continue to investigate where she was during that time.

Police in Hoover, Alabama, just outside Birmingham, said they haven’t been able to follow up with Russell since her return on Saturday, and are hoping to ask her more questions about what happened. Much of her account still hasn’t been corroborated by police, including the existence of a toddler on the interstate.

Russell made a number of “relevant” internet searches in the days leading up to her disappearance about Amber Alerts, a movie about an abduction and bus tickets, Hoover Police Chief Nick Derzis said at a news conference Wednesday afternoon.

Without much of her story verified and without more information from Russell directly, rumors and wild speculation have swirled on social media – was Russell abducted by a man with orange hair and a bald spot, as she said? Did she have a mental health crisis? Was it all made up?

“Anything’s possible,” said Michael Alcazar, a retired New York Police Department detective, who teaches at the John Jay College of Criminal Justice in New York City.

Keith Czeskleba, Hoover Police Department’s public information officer, told USA TODAY by email Thursday the investigation will continue with a focus on figuring out what happened during the 49 hours she was missing.

“We are confident that we will be able to do so,” Czeskleba said.

What happens next in the investigation?

Czeskleba didn’t say exactly what police would do next in the unusual case, but Derzis said investigators are still hoping to get more information from Russell. Derzis said only Russell has the answers to many of the questions that remain.

The effort to get to the bottom of the case is exhaustive.