A woman is dead after a crash involving a Pittsburgh Regional Transit bus on Monday.  

A spokesperson for PRT said the 50-year-old woman was killed in a crash around 12:15 p.m. near the intersection of Rhine and Buente streets in Pittsburgh's Spring Hill neighborhood.

The woman was unresponsive when paramedics arrived. She was taken to Allegheny General Hospital, where she was later pronounced dead, PRT's spokesperson said. The medical examiner later identified her as Dana Fountain. 

A neighbor told KDKA she believed the victim, who lived in the Three Rivers Manor apartment complex, was getting ready to get on the bus before she was killed.

"They said she was knocking on the window for the bus driver to open the window," neighbor Angel Rutan said. 

PRT said additional details about the cause of the crash are "unknown at this stage" in Port Authority police's investigation. No other information was released on Monday. 

The bus, a 6-Spring Hill, was towed from the scene for further investigation, PRT said.