Updated

A Florida mother is "beyond outraged" and still awaiting an explanation from school officials some two weeks after her son was allegedly ordered off a bus while in the throes of a diabetic seizure.

Cynthia Shepard of West Park, Fla., said her 16-year-old son, Andrew, suffered the seizure as he rode home from school. His 14-year-old sister, Jazmen, who was also aboard the bus saw her brother "twitching," and promptly alerted the driver, who "did nothing," according to Shepard.

"He was not helping her. She [Jazmen] went to the back of the bus to pick him up," she told FoxNews.com. "The driver turned around and looked at him in his face and then told my daughter, 'It’s your stop. You have to get off.'"

Once off the bus, Andrew continued to have a seizure on the side of the road, Shepard said. Paramedics were eventually called, and Andrew spent two days in the intensive care unit of a nearby hospital.

"It’s so wrong. How could someone do that? I’m beyond outraged," Shepard said.

Both students attend school in Broward County. In a statement sent to FoxNews.com on Wednesday, the school district said, "The safety and well-being of students is always our priority."

"Immediately upon becoming aware of the allegations, the District initiated an investigation, which remains open at this time," the statement said. "The bus driver in question has been removed from any student bus routes pending the outcome of the investigation."

Each school bus is equipped with a security camera. But Shepard claims she was told footage from her son's bus is "supposedly blank."