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The Clark County coroner determined that Kenny Cherry died of at least one gunshot to the chest. Mr. Boldon and Mrs. Sutton-Wasmund died of injuries in the crash. All three deaths were ruled homicides.

Police say the shooting appeared to stem from an argument at the valet area of the upscale Aria resort-casino about a block south of the crash scene. The shooting happened after a night featuring Morocco-born rapper French Montana at the Aria nightclub Haze.

Mr. Cherry’s parents live in Emeryville, Calif., and the father said his son’s body would be taken back to Oakland. He said his son started a music career there and was recognized by other rappers within a West Coast hip-hop strain called hyphy.

The younger Mr. Cherry wasn’t well-known in wider music circles, according to Chuck Creekmur, CEO of AllHipHop.com.

Kenny Clutch’s YouTube music video, “Stay Schemin,” shows scenes of hotels along the Strip as he sings about paying $120,000 for his Maserati.

“One mistake change lives all in one night,” he raps in one verse.

The elder Mr. Cherry, who said he runs a cellphone business, said he helped his son make payments on the Maserati. He said he last spoke to him on Wednesday, when they talked about the high cost of the son’s cellphone use.

The father described his son as an entrepreneur but didn’t say how he made money or if he had jobs other than his music production.

Mr. Boldon’s family in Las Vegas was struggling to cope with his death, said Tehran Boldon, the taxi driver’s younger brother.

Mr. Boldon’s sister, Carolyn Jean Trimble, said MR. Boldon was a father, a grandfather and a car race enthusiast who drove a Mercedes when he wasn’t in a cab. He owned a clothing store in Detroit and worked at a car dealership, his sister said, and drove taxis after moving to Las Vegas about 1½ years ago.

The irony that a man with a taste for beautiful cars was killed by a sports car wasn’t lost on Ms. Trimble.

“He would be tickled to death: ‘Damn, of all things, a Maserati hit me, took me out like that,’” she said. “I’m happy he didn’t suffer.”

In Washington state, Mrs. Sutton-Wasmund co-owned a dress shop, said Debbie Tvedt, the office manager for a Maple Valley plumbing company that Mrs. Sutton-Wasmund started with her husband, James Wasmund. Mrs. Sutton-Wasmund was in Las Vegas attending a trade show with her business partner.

“It’s a big loss,” Ms. Tvedt said in a telephone interview with AP.

The Maple Valley-Black Diamond Chamber of Commerce website said Mrs. Sutton-Wasmund was a board member from 2004 to 2011 before becoming a marketing representative.

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