Nathan Louis Campbell came to Los Angeles less than a month ago, driving a 2008 Dodge Avenger just purchased from a dealership in Littleton, Colo.
The 38-year-old lived in Hollywood nearly two decades ago, spending a few months living on and off at
As a spotty picture emerged Monday of the suspect in Saturday's deadly hit-and-run on the Venice boardwalk, investigators attempted to fill in the gaps and better understand what might have motivated Campbell's alleged crime.
Witnesses say the driver of the Dodge Avenger appeared to deliberately target pedestrians as the vehicle tore through a crowded Ocean Front Walk, sending tourists and vendors diving for cover. An Italian woman on her honeymoon was killed, and 11 others were injured.
Authorities said Campbell turned himself in to Santa Monica police shortly after the incident and was arrested on suspicion of murder. Sources familiar with the investigation said he made spontaneous statements at the time of his arrest implicating himself, but they did not elaborate on what he said.
The Los Angeles County district attorney's office was expected to file charges against Campbell on Tuesday.
As officials worked to determine a motive, they continued to examine Campbell's background.
Public records showed Campbell had lived in Georgia, Florida and, most recently, Colorado. The records also showed that Campbell had a history of arrests in Denver and in Florida, including a April 2008 reckless driving arrest involving alcohol in Panama City Beach.
Four months later, he was charged with trespassing and disturbing the peace in Denver, according to Melissa Drazen-Smith, assistant director of prosecutions for the Denver city attorney's office. He pleaded guilty to trespassing, and the other charge was dropped. He received a fine, Drazen-Smith said, but didn't pay it and spent a few days in jail in early 2009.
In February of that year, he was arrested after allegedly shoplifting from a
He pleaded guilty to the charge and spent five days in jail, Drazen-Smith Said.
In July 2009, he was arrested on trespassing charges at the same mall after buying a movie ticket and refusing to leave the theater, Drazen-Smith said. He had been warned twice before not to go to the theater, she said.
Campbell again pleaded guilty and spent time in a sheriff's work program, Drazen-Smith said.
Less than a year later, in February 2009, records showed that Campbell was arrested on suspicion of shoplifting and spent five days in a Denver jail. Five months later, he was accused of trespassing and spent 10 days in jail.
He also had been accused of trespassing in 2008, Denver County court records showed.
Campbell's movements in subsequent years remains unclear, though sources familiar with the investigation said detectives were focused on the months immediately leading up to Saturday's incident and whether any major life events could help explain his alleged actions.
The sources said Campbell had a history of drug and
Detectives were also re-interviewing witnesses and examining photo and videotape evidence, in an attempt to establish a firm time line as well as determine whether the driver intentionally accelerated into the throng on the boardwalk as witnesses reported.
Video taken from a Dudley Avenue restaurant shows a man believed to be Campbell pacing near a sedan, then getting into the car and driving suddenly forward, out of camera range. Officials said the car entered Ocean Front Walk by driving onto the sidewalk and maneuvering past five narrow concrete pylons meant to block cars.
The vehicle appeared to reach speeds near 60 mph as it sped a quarter-mile down the boardwalk, witnesses said. The driver tried to exit through a parking lot but struck a sunglasses stand, onlookers said. The car then backed up and exited at Park Avenue, a street with no blocking barriers, they said.
By Monday, a colorful canvas was the latest makeshift memorial dotting the boardwalk. Shelly Gomez, 52, put the canvas down, inviting visitors to "Help create a canvas of 'Love + Light' for the family of Alice from the Venice Beach Community." Splashes of orange, neon-green and yellow filled the canvas by early afternoon.
Gomez was one of the artists who watched Saturday when the car barreled through the crowd.
"After the car started hitting all these people, it was like a video game," she said.
As witnesses rushed to help the injured, Gomez said, she sat with Gruppioni's husband and told him to try to stay calm.
"He was just screaming for his wife," she said. "He was just very distraught."
The Los Angeles County coroner's department completed an autopsy on Gruppioni on Monday and determined she died of blunt force trauma to the head and neck. Her death was listed as a homicide, coroner's spokesman Ed Winter said.
Los Angeles Mayor Eric Garcetti called Saturday's rampage a tragedy, adding that he plans to get in touch with Gruppioni's husband and family.
"This should have been the happiest moment of her life," he said.