Two people have been treated due to a smoke condition along the 1 subway line in Washington Heights, officials said. The New York City Fire Department says they were called to 191st Street and St. Nicholas Avenue at around 12:50 p.

Service on the 1 subway train was restored late Tuesday afternoon after a southbound train hit some debris on the track and caused a smoke condition in the 191 St. station in Manhattan. Fire

Investigators believe the smoke was caused by a moving train striking an object on the tracks, officials said.