EDMONTON -- A school bus driver from Spruce Grove has been arrested after school staff noticed she was drunk behind the wheel as students were getting on board, RCMP said.

Mounties responded to Graminia School, a K-9 in Spruce Grove, on Monday at 3:11 p.m. after staff noticed one bus driver was impaired.

Charges are pending against the 46-year-old female driver, who was suspected of being drunk, RCMP told CTV News Edmonton.

Golden Arrow told CTV News the driver, who had been hired in September, has been fired.

It's unclear how many students were on board and how old they are, but the Parkland School Division said no one was injured.

"A situation where an individual would put students and others in potential danger is intolerable," superintendent Shauna Boyce said.

Students had to wait for a replacement driver and were late getting home, Boyce added. 

Anyone with information on the incident is asked to call Parkland RCMP at 825-220-7267 or Crime Stoppers at 1-800-222-8477.