A “device” has been sent to Gov. Andrew Cuomo’s Manhattan office, he announced Wednesday — but later revealed it was just a thumb drive containing information about the Proud Boys.

Cuomo mentioned the device during a press conference to discuss bombs sent to the homes of other leading Democratic figures and CNN’s New York headquarters.

“As you have heard, there is a number of devices and there is a pattern apparently to the number of devices, we wouldn’t be at all surprised if more devices show up. A device has been sent to my office in Manhattan, which we were just informed about,” Cuomo said at a press conference outside CNN’s Columbus Circle headquarters.

But police later said his office didn’t receive a bomb — it was just an envelope containing the thumb drive.

A Cuomo spokesman said the files were about far-right organization the Proud Boys.

“A preliminary investigation on the package at Governor Cuomo’s office shows it is computer files on the hate group, The Proud Boys, who recently appeared in New York,” spokesman Rich Azzopardi said in a statement.

Cuomo recently ordered state police to investigate the Proud Boys after its members were allegedly involved in a violent brawl outside the Upper East Side’s Metropolitan Republican Club.