Cyclist in his 50s suffers life-threatening injuries after being hit by truck

A cyclist suffered “extensive injuries” and is in life-threatening condition after being struck by a truck at Jones Avenue and Dundas Street East.  Toronto police say the entire intersection is closed for investigation.  More to come Update: this is a cyclist, not a pedestrian who was struck by a truck.
Injuries appear to be life threatening.
Involved driver/ vehicle still OS.
The entire intersection of Jones/ Dundas closed. Please use an alternate route. #GO880739^adc —@TPSOperations http://www.cbc.ca/news/canada/toronto/cyclist-struck-1.4665042?cmp=rss