Toyota Motor Corp. is recalling about 2.87 million sport utility vehicles (SUVs) worldwide after rear seat belts separated in one fatal accident in Canada and during a crash that injured a passenger in the US. The auto maker has been unable to confirm if the fatality or injury are connected with the defect prompting its recall of RAV4, RAV4 EV and Vanguard SUV models, spokeswoman Kayo Doi said in an e-mail. Rear seat belts in the vehicles could be cut by metal seat-cushion frames in severe front crashes and fail to restrain passengers, she said. The seat belt issue poses risk to the RAV4's image as the model becomes one of Toyota's most significant in the US market. The SUV may surpass Camry, the industry's top-selling car in the US for the last 14 years, and become Toyota's biggest seller within the next five years, senior vice president Bob Carter said in December. The recall also tacks on to what is already one of Toyota's biggest ever repair campaigns involving safety devices. Toyota is among 14 manufacturers calling back about 24 million vehicles to replace Takata Corp. inflators that have ruptured and led to the largest US auto-safety recall. Older RAV4 models also are included in the Takata air bag recall. Toyota is initiating its latest recall after Canada's regulator reported in October that seat belts had been damaged during crash-test research, Doi said. The recall is due to Toyota's vehicle design and not its suppliers, she said. Dealers will install resin covers for rear metal seat frames at no cost to customers. The recall includes about 1.33 million vehicles in North America, 625,000 in Europe and 434,000 in China, according to the company.