Mounties have arrested a 19-year-old believed to be responsible for two separate assaults on Fraser Valley buses over the past few days.

The first incident occurred Saturday morning when a suspect described as a young, emotionless Caucasian man choked a bus driver as he pulled up to King George Boulevard and 76 Avenue in Surrey.

On Wednesday, a rider was stabbed in the back near the Aldergrove Centre Mall by a man of a similar description. The victim was airlifted to hospital, and is expected to survive.

Gavin Davies of the Canadian Auto Workers Union told CTV News before the arrest drivers were "legitimately scared."

"We're alone. We work in a precarious position where we're all by ourselves, especially out in the urban areas," Davies said.

Langley RCMP say they identified the suspect Wednesday using surveillance footage provided by TransLink, and arrested him without incident shortly after midnight.

Members of the Langley and Surrey RCMP brought him into custody with assistance from the Lower Mainland Emergency Response Team.

The Surrey resident remains in custody and has a court appearance scheduled for Thursday.