Durban - Hundreds of people gathered at Durban's Blue Lagoon, as the search for missing Sunningdale resident Brenda Scriven entered its third day on Thursday.The 62-year-old went missing during torrential rains in Glen Anil on Monday night. Her car was found abandoned at the roadside.It was later established through CCTV footage that Scriven had been swept off away by the raging water. She has not been seen since.Police search and rescue officers have spent two days, using heavy excavation equipment, searching through earth and debris in a ravine near Glen Anil.Marshall Security spokesperson Kyle van Reenen said the search had now been expanded to the rest of the Umgeni River."We have had hundreds of volunteers come down and show their support in the search for Brenda. The volunteers will be divided into teams that will walk the banks of the river and beach. Others will use paddle skis and jet skis to search up the Umgeni," he said.