For weeks, one vehicle appeared to be the clearest physical clue in the search for 14-year-old Diana Galvez Ortega.

A white Nissan Altima with no license plates had been captured on surveillance video with Diana and her father, Sergio Galvez Perez, investigators said. Authorities believed the car could help lead them to the missing teenager, whose disappearance is tied to an extraordinary and deeply troubling criminal investigation in Monterey County, California.

Then the car was found.

But Diana was not inside.

Neither was Perez.

That discovery has created a new and difficult question for investigators: If authorities finally located the vehicle that appeared to connect the pair to their last known movements, where did they go next?

The Monterey County Sheriff’s Office announced that the Nissan Altima was located in Monterey County with help from the public on the night of Sept. 8. Officials have not publicly disclosed the precise location where it was found. The vehicle is no longer being sought as part of the Amber Alert.

Diana and Perez, however, remain missing.

And finding the car may have transformed the investigation rather than ended it.

The Vehicle Had Become a Major Lead

Diana and 38-year-old Perez were last known to have been together in Salinas around 2 a.m. on Aug. 4, near Constitution Boulevard and East Laurel Drive, according to the California Highway Patrol.

Investigators later obtained surveillance footage showing the two together in a white Nissan Altima without license plates.

That footage became especially important because it confirmed something investigators had been trying to establish: Diana and Perez were together after the event that triggered the broader investigation.

On Sept. 6, the California Highway Patrol issued an Amber Alert at the request of the Monterey County Sheriff’s Office, extending the search across numerous counties in Central and Southern California. Authorities urged anyone who saw Diana, Perez or the Altima to call 911 rather than approach them.

At that stage, the car was more than a description on an alert.

It was a moving clue.

Finding it could potentially tell investigators where Diana had been, how long she and Perez had remained in the area and whether they had traveled somewhere else.

Then, only two days after the Amber Alert was issued, the Altima surfaced.

But Finding the Car Did Not Mean Finding Diana

The sheriff’s office said the vehicle was located in Monterey County with assistance from members of the community.

Officials did not announce that Diana or Perez were found nearby.

Instead, they emphasized that the search for both continued.

That distinction is critical.

A vehicle can provide investigators with a location, but it does not necessarily reveal when the occupants stopped using it. Diana and Perez could have left it shortly before it was discovered — or considerably earlier.

Authorities have not publicly said when the vehicle was abandoned, whether anyone had recently driven it, or whether investigators believe the pair left Monterey County after abandoning it.

Those unanswered questions may now be among the most important in the case.

The exact location where the Altima was recovered could also matter enormously. A car left near a residence, transportation hub, highway or isolated area could point investigators in very different directions.

For now, authorities have only publicly identified the recovery area as Monterey County.

The Car Could Still Tell Investigators a Story

Even without Diana or Perez inside, the Nissan may contain information capable of narrowing the timeline.

Investigators routinely examine vehicles in missing-person and criminal investigations for potential evidence such as fingerprints, DNA, personal property, electronic devices, receipts or other material that could establish who recently occupied the car.

Modern vehicles and associated devices can sometimes provide additional clues about travel or activity.

But in Diana’s case, authorities have not announced what, if anything, was recovered from the Nissan, and there is no public confirmation yet that forensic testing has produced a new lead.

That means one of the biggest questions following the discovery remains unanswered:

Did the vehicle contain something that could reveal where Diana went next?

Until investigators release more information, that possibility remains just that — a possibility.

The Search Is Connected to the Death of “Baby Angelita”

Diana’s disappearance is part of a much larger investigation that began on Aug. 1.

That day, a newborn girl was found deceased along Struve Road in northern Monterey County. Authorities later referred to the child as “Baby Angelita.”

A forensic examination found signs of traumatic injury, according to authorities.

Investigators say Diana is believed to be the infant’s mother.

They have also accused Perez — Diana’s biological father — of sexually abusing and impregnating his daughter. Perez is wanted for multiple felony offenses involving Diana, and the sheriff’s office has repeatedly described the 14-year-old as a victim whose safety is the immediate priority.

The legal picture surrounding Diana has also generated controversy.

Early in the investigation, authorities said there was probable cause for a murder arrest warrant involving the teenager. The Monterey County District Attorney’s Office later clarified that the warrant was a Ramey warrant that had not been reviewed or approved by prosecutors and stressed that Diana is a child and a victim of alleged incest.

Officials have since repeatedly emphasized locating Diana safely rather than portraying the search simply as an effort to arrest her.

Why the Discovery Changes the Search

Before Sept. 8, the Nissan Altima gave the public a specific object to watch for.

A white Nissan with no plates is distinctive.

Police could distribute its description across California. Drivers could recognize it. Surveillance systems could potentially capture it moving from one location to another.

Now that advantage is gone.

If Diana and Perez are traveling in another vehicle, moving on foot, staying with someone or using another form of transportation, the public no longer has the same easily recognizable clue.

At the same time, investigators now physically possess the vehicle that may contain information unavailable before.

In other words, the search has shifted from “Where is the car?” to a much harder question:

“What happened after they stopped using it?”

That could require investigators to reconstruct the Altima’s last movements, identify who had access to it and determine whether another person helped Diana or Perez leave the area.

Authorities have not publicly accused anyone of providing that assistance.

More Than a Month Has Passed Since Diana Was Last Seen

Diana is described as approximately 4 feet 10 inches tall and 100 pounds, with black hair and brown eyes.

Perez is described as approximately 5 feet 5 inches tall and 170 pounds, also with black hair and brown eyes.

Their last confirmed sighting dates back to Aug. 4.

By the time the Amber Alert was issued on Sept. 6, more than a month had passed. Investigators said the alert followed newly discovered surveillance evidence confirming that Diana and Perez had been together in the Nissan Altima.

Now the vehicle has been recovered, creating the first major public development since that alert.

But the most important part of the case remains unresolved.

Diana has still not been located.

The Monterey County Sheriff’s Office says its immediate goal is to find her, make sure she is safe and ensure she receives any medical care she may need.

Anyone who sees Diana or Sergio Galvez Perez is being asked not to approach them and to call 911 immediately.

The car investigators spent weeks searching for has finally been found.

Now they have to determine whether it contains the clue that tells them where a missing 14-year-old went next.