A Queens man is facing federal charges for allegedly plotting to shoot up Times Square — and wanted to target politicians in New York and Washington, DC, sources told The Post Friday.

Ashiqul Alam, 22, allegedly discussed buying suicide vests and hand grenades — but opted instead to shoot up the Crossroads of the World, sources said.

The Jackson Heights resident, who has been under investigation for months, also considered attacking politicians in New York and DC, sources added.

Alam was nabbed Thursday by the Joint Terrorism Task Force after allegedly trying to buy guns with the serial numbers removed, sources said.

Sources said he acted alone and shot video of Times Square in preparation.

An indictment charging the man will be unsealed later Friday morning ahead of his arraignment in Brooklyn federal court in the afternoon, sources said.