Police in Saint John responded to a collision around 6:48 p.m on Saturday night involving a Saint John Transit bus and a motorcycle.
It occurred on McDonald Street in east Saint John.
The driver of the motorcycle was taken to the Regional Hospital by ambulance but there is no update on their condition.
Officers are interviewing witnesses and gathering evidence as they look into the cause of the collision.
Police have asked residents, businesses and drivers who may have witnessed the collision or who have security or dash-cam footage of the area or the incident to come forward.
Contact the Saint John Police Force at (506) 648-3333.
To provide information anonymously, contact Crime Stoppers at 1-800-222-8477.