Toronto Fire crews have doused a fire on the 20th floor of residential high rise in East York.Firefighters were called to 47 Thorncliffe Park Drive, near Overlea Blvd., at around 4:27 p.m. Friday after smoke was reportedly emanating from a unit.The fire was contained to a unit on the 20th floor.It was unoccupied at the time and no injuries were reported.Toronto Fire says crews remain on scene to clear smoke and assure no flare ups occur.