A downtown businesswoman said an FBI agent interviewed her Thursday about operations at an office building owned by developer Frank Parlato Jr.

Parlato has created a tourist hub using a city agreement that gives him a five-month moratorium on the usual approvals.

Debora Krieger said the agent interviewed her for two hours and asked several questions about Parlato and Paul A. Grenga, the Falls attorney who brokered the city agreement on his behalf.

FBI spokesman Paul M. Moskal would not confirm or deny that the FBI interviewed Krieger.

“Isn’t this a little hearsay, especially when she is a disgruntled former tenant?” Parlato asked Thursday. “I think she made it up. I think it’s a fabrication.”

Parlato took over the building — formerly Occidental Chemical — and after that the site of a failed underground aquarium project in 2004 with then-partner Steven Pigeon through a corporation called One Niagara. Parlato is in arrears for $700,000 in county, city and school property taxes.