From New York Post (caution: tabloid):

Outgoing woo-woo-loving Mayor Eric Adams spookily warned successor Zohran Mamdani that his soon-to-be new home of Gracie Mansion is haunted.
“Beware of the ghost,” Adams joked during a Tuesday visit to Washington, DC, a Fox Business reporter posted on X. “It’s a friendly ghost, as long as you’re doing right by the city,” he said. “If you don’t become right by the city, he turns into a poltergeist.” “I don’t care what anyone says, there are ghosts in there, man,” Hizzoner told Yankees announcers Michael Kay and Cameron Maybin in 2022, a few months after he moved into the Upper East Side abode.
