Two of the 11 adults injured when a school bus plowed into a transit bus in Southwest Baltimore on Tuesday were in serious condition at a Baltimore hospital Monday morning, hospital officials said.

A man and a woman are still hospitalized at the University of Maryland Medical Center, almost a week after five people were admitted to the R Adams Cowley Shock Trauma Center there. Three women have been discharged since last week, hospital spokesman Michael Schwartzberg said.


One patient had been listed in critical condition last week, but has since improved.

Six people died in the crash, including the drivers of both buses and four passengers on the Maryland Transit Administration bus. No children were aboard the school bus or involved in the accident.

On Friday, police said that investigators are probing whether the driver of the school bus may have had a medical emergency that caused the crash. As the National Transportation Safety Board ruled out mechanical failure as a factor, it came to light that the school bus driver had taken medication to prevent seizures in the past.

When Glenn Chappell lost control of his Buick LeSabre in Ellicott City in 2014, his wife told Howard County Police he had taken seizure medication, according to a police report.

Chappell was driving the bus Tuesday even though the Maryland Motor Vehicle Administration had revoked his privilege to operate commercial vehicles two months earlier because he didn't provide the agency proof that he was in good health. It was the second time his driving privileges had lapsed for failing to turn in a medical certificate, according to MVA.

Baltimore City Schools officials have a certificate showing that Chappell passed a physical in June.