TORONTO — A man whose family said he suffered from psychosis and depression fired a handgun into restaurants and cafes in a lively Toronto neighborhood, killing a 10-year-old girl and an 18-year-old woman and wounding 13 others in an attack that has shaken the confidence of many in the normally safe city.

Authorities on Monday evening identified the suspect as Faisal Hussain, 29, of Toronto, who died in an exchange of gunfire with police. It was not immediately clear whether he killed himself or was killed by police.

The mass shooting in Toronto’s Greektown district Sunday night came just three months after a van struck and killed 10 people in an apparent attack directed at women.

A statement from the family of Hussain said their son had severe mental health challenges, having struggled with psychosis and depression. They said medications did not help him and the interventions of professionals were unsuccessful.

“While we did our best to seek help for him throughout his life of struggle and pain, we could never imagine that this would be his devastating and destructive end,�? the Hussain family said.

“Our hearts are in pieces for the victims and for our city as we all come to grips with this terrible tragedy. We will mourn those who were lost for the rest of our lives.�?

Police Chief Mark Saunders earlier said he would not speculate on a motive but did not rule out terrorism.

“It’s almost inconceivable that these things can happen,�? said Mayor John Tory. “We were so used to living in a city where these things didn’t happen and as we saw them going on in the world around us (we) thought they couldn’t happen here.�?

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