Metro

Treasures abound beneath city streets for anyone brave — or crazy — enough to explore the steamy, murky depths of the Big Apple’s sprawling 7,500-mile sewer system in search of a wayward wallet or piece of jewelry lost to the ages after falling through a grate from above.

Mayor Zohran Mamdani has launched a civil war in the Democratic Party with his controversial endorsement of a fellow socialist’s bid to oust incumbent Rep. Adriano Espaillat, insiders said Monday.

Authorities on both sides of the US-Mexico border are investigating a sprawling underground passage uncovered in the Tijuana area that is believed to extend toward the United States.

A pair of unusual caught-on-camera sightings of men emerging from Brooklyn manholes in recent weeks have raised concerns in the Big Apple, including an NYPD probe, but a law enforcement source tells The Post based on the evidence it doesn’t appear that anything nefarious is afoot.

Court records show the woman moved into the apartment in 2014 after responding to a Craigslist advertisement seeking a live-in companion for the tenant, who later died in 2016.

Mayor Zohran Mamdani wants to remove the name of his predecessor, Ed Koch, from the 59th Street Bridge over his alleged mishandling of the 1980s AIDS crisis — a stance critics say is a bridge too far.

Police arrested at least 20 protesters outside embattled Newark ICE detention center Delaney Hall Sunday night after they broke a new curfew imposed to stop the violent rallies from continuing.

“You need Chevron, I need Chevron.”

Video shows one man wearing a headlamp emerging from the ground after pushing off the cover of the manhole – which is located in the center of the…

A Spain-bound United Airlines flight out of Newark turned around mid-flight on Saturday as the name of a Bluetooth device sparked concerns about a possible security threat, reports said.