A subway car was left coated top-to-bottom in fire extinguisher powder on Saturday night.
Straphanger Finnley Staub, 19, of Brooklyn, said the conductor of his Q train spotted the car at 96th Street station after Staub and a friend alerted him that another car on the train incorrectly signed for the D line.
Staub shared pictures of the powder-covered train car, which was entirely covered, including the inside of the train operator’s cab.
He said he suspected the train was coated in Brooklyn, but conductors did not notice. The fire extinguisher apparently used in the act of vandalism was standing upright in the train car when it was discovered.
NYPD is investigating, the MTA said, but did not immediately provide details about the incident — which transit officials said will cost time and money to rectify.
“Before this train can return to service, crews will repair damage, thoroughly clean and fully inspect the car to ensure no further damage has been done by the chemicals,” said MTA rep Aaron Donovan. “This senseless act impacts the service the MTA provides to customers and creates an unnecessary cost to taxpayers. The MTA is fully supporting the NYPD’s efforts to apprehend those responsible.”