Quebec stabbing: Two dead after attack by man in medieval clothes
Police confirm at least two people have died and say they have arrested a man in his mid-20s.
Five other people were wounded. A man in his mid-20s was arrested shortly before 01:00 local time (05:00 GMT), officers said.
Police have advised residents to stay inside with doors locked as an investigation is under way.
The attack took place in the historic Old Quebec neighbourhood.
First reports of the incident near Parliament Hill came through shortly before 22:30 local time.
After his arrest near the Espace 400e business park, the man was taken to hospital.
Reporters at the scene have tweeted photos of a police command post outside Quebec's Parliament Building.