LOS ANGELES — The driver parked outside a hotel and surveyed the leisurely summer scene at the Venice Beach boardwalk: Hundreds of people were sitting at cafes, walking along the seashore or shopping at vendors selling jewelry or art.
Then, according to surveillance video, the man got into a large black car, steered around a vehicle barrier and accelerated mercilessly through the crowd, hitting one person after another as bystanders tried desperately to get out of the way.
Saturday's hit-and-run killed an Italian woman on her honeymoon and hurt 11 others who only a moment earlier had been enjoying an afternoon near the beach at the height of vacation season.
A couple of hours later, authorities arrested a man on suspicion of murder after he walked into a police station in neighboring Santa Monica and said he was involved.
Nathan Louis Campbell, 38, of Los Angeles, remained jailed Sunday on $1 million bail.
Police declined to discuss a motive but Deputy Chief Kirk Albanese said there was no indication that the attack was a terrorist act or that anyone else was involved.
By the time it was over, the driver had covered about a quarter of a mile along the boardwalk before fleeing. The entire incident was over in minutes.
Witnesses reported a horrifying aftermath.
People were " stumbling around, blood dripping down their legs, looking confused not knowing what had happened, people screaming," said Louisa Hodge, who described "blocks and blocks of people just strewn across the sidewalk."
The Italian woman was identified as Alice Gruppioni, 32. Her family in Bologna told the Italian news agency LaPresse that she had been on her honeymoon after a July 20 wedding.
Gruppioni worked as a manager for the family business Sira group, which makes radiators. Her father, Valerio Gruppioni, runs the company and was formerly president of the Bologna soccer team, according to LaPresse.
The family declined to speak to The Associated Press on Sunday.
Another person was critically injured. Two others were taken to hospitals in serious condition. Eight suffered less serious injuries, police said.
According to security video and witness accounts, the driver parked next to the Cadillac Hotel and twice walked out to the boardwalk before getting into the Dodge Avenger. He carefully maneuvered between a storefront and metal poles that had been erected to prevent anyone from driving onto the boardwalk.
Then he stepped on the accelerator and plunged into the crowd.
"I heard a big 'boom, boom,' like the sound of someone going up and down the curb, it was super loud," said Alex Hagan, who was working the desk at the hotel.
The driver knocked over two mannequins and an ATM and started hitting people, swerving from side to side and often running straight into victims. Video showed the car struck at least three vendors — a fortune teller, a couple selling jewelry and a woman who does tattooing.
Two women who appeared to be in their 60s were also hit. Many people ran after the car, screaming and cursing as it sped away, Hagan said.