NEW YORK — An abandoned pyramid-shaped structure that has been in a storage container in a New York City warehouse for more than a decade has been found, a police spokesman said Thursday.

The unidentified man who found the abandoned structure, which is about a block from the corner of 16th Street and Second Avenue, was asked by the city to come forward and turn himself in to authorities, according to the NYPD.

Authorities have yet to make any arrests in connection with the case, said the NYPD spokesman, John Miller.

The man had previously been charged with obstructing a peace officer, and a search warrant was issued for his home, Miller said.

New York City has seen a number of unexplained disappearances, most recently in April when an unidentified man, whose name was not released, disappeared in the city’s Chinatown neighborhood.

At the time, authorities said the man was a construction worker, but his identity has not been released.

The city has offered a reward of up to $50,000 for information leading to his capture.

Investigators are trying to determine the age and identity of the unidentified man’s former girlfriend who may have been living with him in the warehouse, Miller told reporters.