GUILDERLAND — This afternoon, the car of an elderly Latham couple crashed into a bus, killing the woman passenger.

The crash took place just before 1 p.m. where the Northway meets Route 20.

The car, a 2007 Ford Freestar, was driven by Edward J. Hogan Jr., 86; he was driving south on the Northway when he “may have suffered from a medical emergency and failed to stop for the red traffic light at the intersection of Route 20,” according to a release from the Guilderland Police.

His wife, Priscilla E. Hogan, 84, who had been sitting in the front seat, was taken to Albany Medical Center where she was pronounced dead a short time later. Mr. Hogan is currently a patient at Albany Medical Center and listed in critical condition.

The Hogans’ address is listed as 42 Mill Road in Latham.

The Capital District Transportation Authority bus, which was traveling west on Route 20, had six passengers aboard along with the driver at the time of the crash, the release said; three passengers were treated for minor injuries and taken to St. Peter’s Hospital. A fourth passenger was treated at the scene and released; the other two passengers and the driver said they had no injuries.

Northway traffic was directed through Crossgates Mall Road for about an hour and a half as the end of the Northway was closed for an investigation, which is ongoing.

In addition to the Guilderland Police, these agencies responded: the New York State Police, Guilderland Emergency Medical Services, the Western Turnpike Rescue Squad, the Altamont Rescue Squad, and the Westmere Fire Department.