The U.S. Department of Transportation stated Thursday that it was investigating why passengers on a Delta Air Lines flight had been left to swelter for hours in triple-digit temperatures whereas the airplane waited on the tarmac at a Las Vegas airport on Monday.

The flight, DL555, to Atlanta, was alleged to take off from Harry Reid International Airport on Monday however as an alternative sat on the tarmac, the place the intense warmth sickened passengers, inflicting a few of them to faint, in keeping with studies posted to social media by these on board.

The ordeal lasted practically three hours, with paramedics boarding the airplane to wheel out three individuals who had fallen sick, Krista Garvin, a passenger and a producer for Fox News, wrote on Twitter.

“They said to press your call button if you need medical assistance,” she stated. “Babies are screaming crying. They’re handing out sandwiches to the diabetics.”

She later added, “I am just shook.”

In a clip posted by Ms. Garvin, the captain seems to make an announcement apologizing to these aboard for the intense warmth. Eventually, passengers disembarked as a result of “too many people were sick and they want to try and cool down the plane,” Ms. Garvin stated, noting that passengers had been then informed that the crew had fallen sick.

Another passenger stated on Instagram that she had run out of meals and diapers for her child, however that regardless of the warmth, he had managed to stay calm. Others reported that Delta had not offered them with any water and that the bogs had been closed.

Delta Air Lines didn’t instantly reply to requests for touch upon Thursday evening however informed ABC News it was investigating the incident.

“We apologize for the experience our customers had on Flight 555 from Las Vegas to Atlanta on July 17, which ultimately resulted in a flight cancellation,” the corporate stated in a press release. “Delta teams are looking into the circumstances that led to uncomfortable temperatures inside the cabin, and we appreciate the efforts of our people and first responders at Harry Reid International.”

Temperatures in Las Vegas reached 114 levels on Monday as a lot of the nation baked in a heat wave that has damaged temperature information in numerous cities, leaving tens of millions beneath extreme warmth warnings.

According to the Transportation Department, airways are required to supply comfy cabin temperatures throughout tarmac delays.

“I want to know how it was possible for passengers to be left in triple-digit heat on board an aircraft for that long,” Pete Buttigieg, the transportation secretary, told Reuters on Thursday, noting that the episode had lasted a number of hours.

“Even at normal temperatures, a tarmac delay is not supposed to go that long, and we have rules about that, which we are actively enforcing right now,” he stated.

Mark Walker contributed reporting.