Suspect in Venice Beach boardwalk rampage a mystery Updated 5:23 p.m. LOS ANGELES Before a black Dodge Avenger careened down the crowded Venice Beach boardwalk last weekend, injuring 16 people and killing an Italian newlywed, suspect Nathan Louis Campbell left virtually no evidence of his short presence in Southern California. The 38-year-old had no fixed address and no state driver's license, and police have found no evidence he was working. Investigators believe Campbell, who was arrested for investigation of murder after he walked into a police station several hours after Saturday's rampage, was driving his own car, Los Angeles police Cmdr. Andrew Smith said. "I think we can safely say, when he turned himself in ... he implicated himself in the Venice incident," Smith said. Police have not yet presented their case to prosecutors, who planned to file charges Tuesday, when Campbell could also appear in court. Investigators have yet to provide an explanation why the driver maneuvered around a vehicle barrier early that evening and plowed into tourists and vendors along the fabled walkway bordering the Pacific, killing Alice Gruppioni, 32. Her new husband, Christian Casadei, was at her side. "She was beyond happiness," Katia Gruppioni said. Gruppioni's family described her as a devoted businesswoman with a romantic side, who never stopped dreaming about her bridal gown and meeting Prince Charming. The Los Angeles City Council also unanimously approved Tuesday a motion that asks police and city officials to immediately erect temporary barriers at the most dangerous intersections along the boardwalk in order to prevent cars from getting in. The council also asked for a two-week study that will assess where to install permanent posts or other barriers to keep cars away from pedestrians.