It happened in Horry County on Highway 917 Tuesday night as the van was in still water on Pee Dee Island Road near the bridge.
"We get an order to transport to a facility, that's what we do", Thompson said. "Despite persistent and ongoing efforts, floodwater rose rapidly and the deputies were unable to open the doors", the statement reads.
"High water rescue teams arrived and were able to rescue the two deputies from the top of the van". Due to unsafe conditions and rising waters, additional search and rescue teams are arriving to assist in the recovery of the vehicle.
The Marion County Coroner has confirmed the deaths of both detainees, who have not been identified. "It's come up 2 feet since just last night". "They were trying to negotiate through fast-running water, and it just didn't work out", Richardson told AP about the incident. Thompson said his office would cooperate with the probe.
WLTX reports that the two deputies were transporting the two patients to McLeod Behavorial Health in Darlington.More news: Trump Says He Wants To Hear From Kavanaugh's Accuser
Thompson said he was concerned with the five deaths, but he said those at the detention center were different. Chief Deputy Tom Fox of the Horry County Sheriff's Office did not respond to an email request for the spellings.
The Transportation Department advised northbound motorists to take a wide detour around the area by using I-85 from Georgia through South Carolina's Upstate and on to Charlotte.
Facebook/Jewels Green Nicolette Green pictured on her sister's Facebook page. She also posted multiple times about her struggles.
State police spokesman Thom Berry told the AP on Wednesday that agents were on the scene aiding in the recovery effort.
Justin Bamberg, a state lawmaker and lawyer who has represented the families of several people injured or killed by law enforcement officers, said Wednesday he's perplexed by the decision to transport anyone in such uncertain weather conditions. "If that road is in an area where it is a flood risk, why were they driving on that road anyway?" asked State Rep. Justin Bamberg, a trial attorney in SC who has represented families in cases of police killings, according to the AP.
"I know for many people this feels like a nightmare that just won't end", he said.