It is unclear if Savannah Graziano was kidnapped by father Anthony Graziano

A teenage girl who authorities originally believed was kidnapped by her father before the two were killed in a shootout with California police may have gone with him voluntarily, police said Wednesday.

Anthony Graziano and his daughter Savannah Graziano lived together in the father’s pickup truck and hotels for weeks before Tuesday’s deadly shooting on Interstate 15 in Hesperia, authorities said.

“Did she go voluntarily?” Fontana Sgt. Christian Surgent told the Associated Press. “Or was she actually kidnapped? We haven’t been able to prove that yet.”

Tuesday’s shooting came as Anthony Graziano was on the run for allegedly killing his estranged wife, Tracy Martinez, near an elementary school during drop-off Monday morning.

He fled the scene with Savannah in a Nissan Frontier and an Amber Alert was issued warning that Graziano was armed and dangerous.

Bernardino County Sheriff Shannon Dicus said there was “some evidence” that Savannah shot deputies during Tuesday’s police chase, but didn’t elaborate.

There is video of the fatal incident taken by police and is being reviewed.

Police believe Savannah was homeschooled while living with her father, who camped in his truck in the desert and mountains.

Graziano and Martinez would be getting a divorce, Surgent said. The teenager’s younger brother lived with his mother.

With mail wires