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Utah Highway Patrol investigators say this vehicle was involved in the I-15 incident that killed Chelsea Smith-Peaslee on Saturday.

FARMINGTON — Davis County prosecutors are screening criminal charges against a man arrested in connection with a hit-and-run crash that killed a 15-year-old Layton girl.

Investigators with the Utah Highway Patrol met Wednesday night with prosecutors, who said criminal charges could be filed against David Romero as early as today. Police believe Romero, 44, was driving the car that killed Chelsea Smith-Peaslee late Saturday night.

Troopers said Peaslee and her cousin hopped a fence and tried to run across I-15 near the Layton Hills Mall. A 2003 Ford Mustang hit her, but did not stop.

Additional reports and evidence were being compiled Thursday, deputy Davis County Attorney Bill McGuire said.

"The one that he was arrested on is the one that we currently know what the evidence is," he told the Deseret Morning News. "They are submitting other things on other potential charges."

The UHP said that after hitting Peaslee, Romero drove home.

"When he gets home, he has somebody follow him to West Valley, where he abandons the car," UHP Trooper Cameron Roden said. "That person drives him home. When he gets home, he files a stolen vehicle report around midnight."

Pieces of the car and a license plate found along I-15 led investigators to Romero, who lives in Salt Lake County. He was questioned late Tuesday night and arrested on suspicion of leaving the scene of an injury or fatal accident, a class A misdemeanor. Romero posted $1,882 bail.

The UHP said Romero admitted to driving the car, but why he didn't stop is still a mystery. "It could be anything," McGuire said. "The guy can just get nervous and kind of freak out."

Peaslee's funeral was Thursday in Layton.

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