The assailant too was shot dead by police, bringing the total number of deceased to eight.
At least two others have sustained injuries and have been moved to a hospital, police said.
The incident took place on Sunday evening, shortly after eight p.m.
Police said that they are looking for a motive but confirmed that all the people involved were adults.
A witness was quoted in the media as saying that before the incident took place, she saw a man and a woman getting involved in an argument.
None of the people involved in the incident have been identified so far.
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