A father-of-six oral surgeon and his 21-year-old assistant were killed after their SUV fell from a bridge and into an icy creek in Texas . Robert Weinstein , 71 , and Abigail Resendiz were identified as the two passengers who died in the accident at Mary 's Creek in Tarrant County , which happened around 9.30pm on Saturday . The car 's driver , an unidentified woman , was injured but able to free herself from the vehicle and call for help . Robert Weinstein , 71 , and Abigail Resendiz , 21 , were killed after the SUV they were riding in hit an icy patch and flipped into Mary 's Creek in Tarrant County , Texas at 9.30pm on Saturday . Forth Worth Fire Department divers spent an hour trying to free Weinstein and Resendiz but they were daunted by the freezing water , according to spokesman Lt. Michael Glynn . 'Within four to five minutes , they 're very cold and having trouble functioning and coordinating their efforts , ' he said . Glynn said that the temperature and darkness were the 'worst possible scenario ' the divers could have had and that it was 'incredibly difficult ' for them to operate in the conditions . Diver teams had to rotate every five minutes , according to the Dallas Morning News . Resendiz was eventually freed from the car , but passed away in the hospital . A fire truck provides lighting during rescue efforts . Forth Worth Fire Department divers spent an hour trying to free Weinstein and Resendiz but were daunted by the freezing water . Dive teams had to rotate every five minutes because the cold water impacted their ability to function and coordinate their efforts , according to a fire department spokesman . Firefighters had to use the jaws of life to free Weinstein from the vehicle . He died at the scene . Resendiz and Weinstein 's cause of death was listed as drowning , with hypothermia and collision impact included as factors , according to WFAA-8 . Weinstein 's brother Loren said Robert and his two staff members were returning from Odessa , where they travel to every month to help other oral surgeons with high demand in the area . He said Robert 's SUV hit a patch of ice on the way home and flipped into the creek . Glynn said Fort Worth police are still investigating what caused the accident but believe weather played a contributing factor . Resendiz and Weinstein 's cause of death was listed as drowning , with hypothermia and collision impact included as factors . Dr. Charles Chilcoat , who worked with both Weinstein and Resendiz , said he was shocked to learn about their deaths . Chilcoat said Weinstein was 'like a brother to him ' , who traveled the world with his wife and was a 'mentor to me and a good friend ' , he told NBC DFW 5 . He said Resendiz was a 'good kid ' who was always helping him remain upbeat and optimistic . 'She 'd say `` come on Dr. Chilcoat , we just have one more patient , you can get through it . '' ' 'She was just 21 years old , and that 's so sad . ' Weinstein 's brother Loren said Robert and his two staff members were traveling on the bridge ( pictured ) on their way home from Odessa , where they travel to every month to help other oral surgeons with high demand .
WeinsteinRobert Weinstein , 71 , and Abigail Resendiz , 21 , were on their way home from work with a third female staff member . SUV hit icy patch and flipped into Mary 's Creek in Tarrant County , Texas . The driver was able to free herself from the car and call for help . Divers spent an hour in rescue efforts , but were daunted by darkness and freezing cold water and had to rotate every five minutes . Resendiz was freed from vehicle but passed away later in the hospital , and Robert Weinstein died at the scene . Both of their causes of death were listed as drowning .