Two people have been treated due to a smoke condition along the 1 subway line in Northern Manhattan, officials said.

A 33-year-old man was aboard an A train when an unknown individual began arguing with him over a seat, police said.

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

The No. 1 subway was suspended in both directions between Manhattan and the Bronx on Tuesday, according to the MTA. There was no service between 215 Street in the Bronx and 145 Street in Manhattan, the MTA’s website says.

New Yorkers weren’t be able to ride the 1 train between 145th Street and 215th Street on Tuesday after a fire broke out at the 191st Street station in Washington Heights, injuring more than a dozen people, authorities said.

The 1 train ran with severe delays in both directions after initially being suspended due to a smoke condition inside a station in Upper Manhattan, according to the FDNY.