At least two people have been stabbed to death in the Canadian city of Quebec by a man armed with a sword and dressed in medieval clothing, police say. Five others were wounded in the Halloween night attack. A man in his mid-20s was arrested shortly before 01:00 (06:00 GMT) on Sunday. Police advised residents to stay inside with doors locked while an investigation was under way. The attack took place in the historic Old Quebec neighbourhood. Police tweeted that there was no immediate indication “that the suspect may have acted for motives other than personal ones”. The suspect’s identity has not been made public.