Police say they're searching for two pranksters who allegedly broke into a conductor's booth aboard an R train in Manhattan and announced over the public address system the train had been hijacked by ISIS, according to MTA sources.
The incident happened on the Brooklyn-bound train between the 23rd Street and Union Square stations late Thursday night.
"This is ISIS and we're hijacking the train," the suspects said over the loudspeaker, then fled laughing at the next stop, the sources said.
Police said they're searching for the suspects, believed to be in their 20s.
A passenger told The New York Post that the riders first heard some low singing over the broadcast system.
"Then we heard, 'All hail ISIS! Jihad, Jihad, Jihad!" Lauren Crozier of Sunset Park told the paper.
"Everyone took their earbuds out and stared at each other," she said. "I'm not sure any of us thought it was a credible threat. Not after the first moment, anyway."
When the train pulled into Union Square, the "whole train emptied out," Crozier told the Post.
The train was taken out of service and brought to the Jamaica Yards in Queens, where an investigation was conducted, the Post reported, citing sources who called it a "hoax."